Here’s my problem with your feelings on the issue. I might express this poorly, and I might also be wrong, but I hope you can appreciate the heart of what I’m expressing.
Warcraft uses a difficulty system that subverts almost everything video and computer game players are exposed to in most games, including other MMOs.
If I choose a lower difficulty in a car racing sim, my car still goes as fast as other difficulties, my opponents are slower. If I earn a new car from winning something, it goes the same speed on all difficulties. If I play a fighting sim, or sports sim, my player’s stats are equal between difficulties, only opponents are less powerful.
Lower difficulties do not reward lower quality rewards, and that allows those players to feel accomplished while also enjoying the full force of whatever power they are wielding.
Warcraft not only limits the rewards, but doubles down on the difficulty. So not only are you fighting far more powerful opponents, you’re doing it with inferior gear.
Before you have a mental breakdown, I do not think LFR should reward myth track gear, but I do think that everyone should be afforded reasonable access to that gear, regardless of difficulty so that players can both enjoy the power and use it to tackle tougher content.
Again, just a personal opinion. I would be interested in hearing anyone who feels otherwise to express out loud how much their self-worth is governed by what other players have.
If your big defense is “bad players with good gear will get into my runs,” then not only do I think you are clueless because it’s already happening and just like you tell others when they list their key and it fails, you need to vet your applicants better.