Bad luck protection who would have thought of such an idea, not Blizzard.
We cannot be friendly to anyone in this game and just let them have anything really. Imagine if the Sha mounts drop rate was adjusted or it had protection from bad luck and everyone got it, they’d all complain that it’s not “rare”. Who tf cares? Just let people have stuff, especially something like that.
And honestly, i don’t mind actually working to get those mounts, if it involves a long quest chain that requires me a few days or a grind to pay for those mounts to a vendor. Or god forbid, put it behind difficult content like the Mage Tower even.
Then it will be naturally scarce, and actually better for the game, instead of feeding those with gambling addictions. 
Or just leave it the way it is. AKA let them be rare and stop trying to make everything based on how much effort you put in.
What’s wrong with putting in effort to get a reward? I mean that’s litteraly the fun of video games. This is how it is for most video games, and you are playing a video game, which is an interactive medium. Not a casino game.
The more consistent the rewards you are getting for the effort you put in, the better. And that’s something that should be encouraged. Not shunned. Plus it would still be rare. It would just allow skill and how many people will get it though skill determine if it’s rare or not.
Plus, by your own arguments (as incredibly flawed they are), you’ve given more reason on why meritorious rewards via by effort are good and should used more often.
This is not even going to mention that RNG gets abused for the MTX side of things like Lootboxes. Or Diablo Immoral. I would much rather they put in good game design instead of designing the game to abuse those with gambling addictions to give them that subjective feeling of winning the lottery.
The fact that items from Classic>Dragonflight by now have not had there drop rates fixed is mind boggling. Dragonflight patterns from Dungeons and some Open world ones are that insanely low I gave up bothering to farm them I just buy them when they are low enough of the AH. BFA Assaults are also another area where drop rates are lower than most players IQ. Regardless of being the right class and being able to learn that cosmetic All i got back in BFA was a handful now in Dragonflight my Paladin and Warrior along with other classes I go there for to get the Golden 1h Axe with the Mogu theme the game just hands me the Shield I got back in BFA every single time. Shadowlands Rares who have a Transmog Specific to them alone especially in Maldraxxus and Zereth Mortis etc never drop them either despite having an apparent drop rate of around 5% which is not a trusted % because of the wowhead and its data gathering.
Why they even code items to have a sub 0.5% which is quite honestly the lowest it should be for every single item including things like the new 2h Legendary Axe is fair. Anything lower than half of 1% chance is just insanity and the people in charge of putting said %'s on items needs to be shuffled out. I get it you want people to be endless zombies logging in to constantly farm things but you do not realise how Niche that is. Like <5% of the player base niche the other 95% Either dont bother how there character looks or puts on a hodge podge of gear on and they are happy. Those like me who want to learn patterns to craft the mog for themselves not for others is even lower than mount collectors because patterns ad plans got messed up somehow even in this current expansion the Dungeon ones Do not drop and if any are for sale people want 300k+ for them since they are ludicrously rare and for what the patterns don’t grant super strong or useful items but they are near impossible to obtain which needs to be a priority blizzard. 5 or less people can fix this issues if you give them the green light and can be knocked out in a week fi that so think about it.