Yes, the slippery slope analogy is exactly what’s behind #nochanges.
I’m not a subcriber to the Slippery Slope Church of NO. I’m of the #smalltinychanges camp: I support changes which absolutely do not affect gameplay, like:
That’s about it, actually. Well, I wouldn’t object if they increased stack size… but I wouldn’t be upset if they didn’t.
#SmallTinyChanges
Regarding the OP, what is there really to understand? There are those who liked the game at a particular moment of its existence with particular content and particular game mechanics, and that’s all they want to experience again (to the degree it can be duplicated), end of story.
What some might consider “boring and stagnant,” others would consider “familiar and cozy.” And this naive idea that all changes are always “progress” with no drawbacks is simply false in gaming and in real life.
That being said, I enjoy the QoL changes that have been brought to WoW over the years, but they should remain in Retail alone. Let the Classic fans have Classic unchanged.
It’s just a stupid interface menu…
It’s just a stupid barbershop…
It’s just some stupid number tweaking…
It’s just some stupid fixing of gear stats…
It’s just some stupid balancing…
It’s just some stupid abilities to make specs more viable…
It’s just some stupid feature to make finding groups easier…
It’s just some stupid changes to make travel faster…
It’s just stupid flying…
It’s just stupid LFD…
It’s just stupid LFR…
See our point?
You believe it’s a slippery slope, we get it.
It’s simply that many people don’t think the “slippery slope” is as big a concern as you do.
I have seen the argument been proven right more than enough that I just expect it at this point. And those who say it’s a bad argument are almost exclusively the ones the argument gets in the way of.
I my opinion the #nochangers are all the ppl who pushed for change since Vanilla and regretted how the community successfully push Blizzard into giving all these QoL changes. I like many of the Retail features, less add-ons to install. But yeah, some of the changes since WoW did lower some of the longevity of the game per expansion.
In a way Classic WoW is the help the player base remember where we came from, and how we evolved MMORPG genre over the last 15 years; we pretty much don’t always know what we want.
I have never pushed for flying, LFD, LFR, cheap mounts at low levels, super-fast solo-questing, class homogenization, etc. I was outspoken and quite vocal against all of these changes when Blizzard floated the idea and/or implemented them.
I have always been fine with changes such as mailing more than a single item at once, which is why I am not personally upset it’s in classic, but it sets a dangerous precedent which is why I am against even changes I personally don’t mind.
Think of Classic like the Constitution. Nobody trusts somebody else to just change it a little. Better to not make any changes at all.
Except… there have been 27 #changes to the Constitution…
Yes, assume i’l be okay with the rest of the other QoL features in there, cause i’m a retail player. 
(i realize theirs negative cons that far outweigh the pros that would impact the feel of the game from the 9.5/11 things you just listed.)
Your implying that a barbershop has negative impact to the overall feel and game-play to the game here. That would be true if the aesthetics of the character actually did anything, but it doesn’t in retail.
Name one valid negative about Barbershop other then being a gold sink.
Yeah people will stop playing classic just like they stopped when BC came out. Never once did anyone make huge efforts to restore classic as it once was so the thousands of people who desire to play can play it into eternity. Definitely no one has literally been playing classic on private servers since they became available. Definitely was not a ton of people playing on private servers, and still is, leading up to the release of classic.
How dumb can you be?
There have been a few changes to Classic already too.
Because everybody wants different changes. I’d like to see the ! for quests. My buddy would like an LFG system. His buddy wants guild perks.
All of that stuff is in retail. Classic was supposed to relive the WOW from before all of this stuff, so it would be stupid to add it in. Whether Blizzard decides to push the system forward or not is up to them and player response.
If they continued with Classic Expansions in any iteration, I am very interested how that would happen, as we would slooooowly just see the game catch up to current retail with all of the stuff people complaine about anyway. So I really just see Classic remaining as Classic.
give an inch, they’ll take a mile…this is exactly what happened to retail.
Dude just go play retail if you want that stuff. Make a character you like the appearance and whatever happens after that, oh well.
Here’s a valid negative about Barbershop, it wasn’t in retail and I don’t want it. Have a nice day chump.
Well i’m pretty sure the updated interface or multi-core support or directx 12 or windowed fullscreen isn’t in vanilla… but… i guess i’m the chump. Okay then. 
Well said. I couldn’t have put it any better.
I think that mistrust is a reason many went to nochanges. I would like changes, but I don’t trust blizzard to make any changes and decide if which ones should go in. Thus I’m nochanges
Yeah you’re right, the multi-core support or dx12 aren’t in classic vanilla haha, it would raise the minimum system requirements and is not needed, it’s literally not in the game dude. The interface is hardly updated, what’s different a report feature? Get real chump.
Even then you’re talking about technical behind the scenes features, not in game mechanics. Your argument sucks dude.
And he does.
Your ad hominem attack was unnecessary.