Alright, so we've got 53 threads on the front page of Games, and Games has 36 pages. There are 10 Off-Topic boards, and Games is the third most popular in total threads created & total posts made. Only 4 of the threads break into triple digit pages(Pokemon, Tabletop general, unpopular opinions & WH40K). It currently takes 3 days of inactivity for a thread to get naturally pushed off the front page into page 2 purgatory & beyond. None of this is positive or negative, just raw data to build opinions off of.
Of the 12 threads you listed, only the first 3 are on the front page; Total War ban lewd mods, Sony censoring japs, and Anita Megathread. The Total War thread was started by
@CaesarCzech , whom
@Null publicly hates so it's no surprise it was off to a bad start, but it was game-focused regarding mod communities. Sony censorship made it to 21 pages and was a much more civil thread, but you nipped both in the bud. Finally, Anita megathread should need no explanation, she's as contentious a figure in gaming as Jack Thompson was, and her thread must exist as a lolcow(and containment).
The other nine have appropriately slid into disuse without other developments. I know the Riot thread originally started in A&H, was bumped a few times as Riot continued to "act a fool" and eventually got moved to Games. Now you're mad it was in Games, and you would have liked it somewhere else? All discussion was self-contained & if you wanted to see MOBA discussion like the actual meta, this thread's existence wasn't impeding or ruining that.
Long story short, as someone who pops into Games on and off, I don't feel like there's any real problem with "suffocation" and "SJW complaining" choking out normal game discussion. The two co-exist fairly peacefully, moreso than any other site on the web & the legitimate game discussions far outnumber the individual "KiA style" political/culture stories. People go in them and comment if they care, ignore them if they don't, and normal game discussion isn't ruined in normal threads(except maybe Pokemon, but it's an autism magnet anyways). I don't think there's any overall board disruption & you're looking like a bored traffic cop itching for any excuse to write tickets.