I'm going to take a guess that the OP isn't too good with expressing what his actual problem is with all the diversity stuff and it came out as him saying he doesn't like the diversity movement. I'm going to try to put your thoughts in better words, OP, so tell me if I'm right.
The problem isn't the diversity in itself. After all, it doesn't make a lot of sense why you would be against having some protagonists that don't look like they came out of CoD, unless you really are just small minded. The actual problem you have is that the games being created by the diversity camp tend to be pretty lackluster or just walking simulators. The people in this camp aren't pushing out the next Mario 64, Ocarina of Time, Chrono Trigger, Street Fighter II, Halo, Skyrim or Pokemon. Their games of choice tend to be of the artsy variety that lacks a lot of game mechanics in general and could very well just be called a virtual art museum tour. Sure, there is a segment of gamers that like stuff like Gone Home, but the majority of us want the next Mario 64. I doubt there would be any problem if an indie dev made the next Mario 64 starring a female lead, and I'm sure that's what most gamers actually want when they talk about diversity in gaming. But they're not doing that. I personally don't have anything against games that are primarily text based and story driven. I love Phoenix Wright, Ghost Trick and 9 Persons, 9 Hours, 9 Doors, and I know there's a sizable fanbase for visual novels like Umineko. At the same time, however, I would in no way put games like Gone Home on the same level as those games. Problem is, we're not even getting games from them that are on par with Phoenix Wright, Layton or Umineko, and these games get a free pass for being short and dull just because its "deep" and "artsy".
Also, the diversity camps tends to favor pushing out silly and over-the-top characters for their idea of a "deep" character, and designs that come off as rather bland since people should look "normal." There's a purpose for having silly characters like Bayonetta and Dante just as there is for having serious characters like Joel and Ellie. But it seems like the diversity camp wants everyone to be a Joel and Ellie, and they want to attack every character that wants to be a Dante and Bayonetta. Sure, there are gamers who want mature and serious characters, but there are also plenty of gamers who want crazy, over-the-top caricatures as the lead instead. It's starting to become an environment where we're not allowed to have our caricature leads anymore without being called a neckbeard, and that BS is getting old really fast. I sure wouldn't enjoy Dynasty Warriors nearly as much if every character was a factual representation of their historical counterpart. MovieBob's very first Game Overthinker summarized my point with this, where crazy and over-the-top used to be the rule to gaming, not the exception. A lot of gamers want the buzz cut white dude to go away, but we don't want them replaced by bland and normal people. Gamers want games where people like Mario, Samus, Fox, Simon Belmont, etc. are the norm again. We're all tired of everyone looking like Nico Belic and Commander Shepard, but we don't want the pendulum to swing in the exact opposite direction where every game becomes as silly as BK Kids in an effort to be inclusive.
Is that about right?