TVTropes is when you get brain dribbling exceptional individuals with a subzero IQ and zero world experience trying to be scholars on shit like Channel Awesome and how the latest popcorn flick align with their political extremism. It breeds stupidity and produces an echo chamber of the biggest proportion. To say that these drones are ethnocentric is the biggest understatement of the century. I would tell them that they should learn to code, but I doubt they would understand how to. They are useless garbage who have permanently crippled themselves with a poisonous ideology that only encourages them to stew in their own failure. They can't see their own ass because they are self-righteous assholes who describe themselves as their ideological enemy. When you call merit based egalitarianism evil and disturbing, you are lost.
And you have described one of the primary reason I helped make a fork of TV Tropes.
One of the major bones of contention I and my colleagues had with TV Tropes is that me, Bob Schroeck (Looney Toons) and Brent Laabs (Labster) have actual writer's credentials in some form and it was disgusting us more than a little how the putative mission of TV Tropes had drifted farther and farther away from it's writing mission and further into the quicksands of political and social demagoguery.
We lay the genesis of the problem at three things:
1. The forums became the tail wagging the dog - TV Tropes' forums have become a law unto themselves to the point it's not uncommon for users of the wiki to remain utterly ignorant of what is done on the forums until an administrative on the forums is suddenly implemented on the wiki, and it was getting to the point it getting tedious and disruptive to the harmony of the site as a whole.
2. Lowest common denominator pandering to all sorts of crap might have built up a large userbase, but not curating out the most cancerous autism and enforcing site policy and goals more effectively led to the more messed up autists running the asylum.
3. It became less about the mission of the community and more about the goals of the owner, which is why we all had a massive grievance against Fast Eddie. We might be the founders, but that never makes us gods, and we are just as responsible as the rest of the community for how the website is perceived and how it conducts itself for the public to see us as.
I will not be arrogant enough to claim we are better than TV Tropes, that's a judgment I leave others less biased to decide, but a lot of criticism levied against them we decided to pay attention to even if not every one was agreed with, and we decided to make changes to become a less a circlejerk and more about actual writing and the tropes said writing uses in media.