This one is broad, but it can be about anything from a fandom or historically or just in general.
The Montreal Screwjob in the WWF. This is the most over-covered subject if you’re a wrestling fan. Story goes, Bret Hart was to face Shawn Michaels in the 1997 Survivor Series in Montreal Canada. Tensions were high leading up to the match and Vince McMahon was afraid Bret was going to take the championship belt to WCW if he retained. So, about several minutes into the match, Shawn Michaels was about to lock in the sharpshooter on Bret when the bell prematurely rang, initiated by Vince and called by Earl Hebner, refereeing the match. There was a flurry of confusion at first but it came clear as day to everyone that Bret was screwed right then and there.
And for 29 years since, there had been constant interviews, constant coverage, wrestling content creators bringing it up a lot and treating it like there’s one bit of information left out. By this point, it’s been so covered, that we have most of the pieces. Shawn and HHH themselves knew it was a screwjob (it took Shawn years to admit it, HHH is still adamant about it for some reason) and WWE has their own revisionist telling about what happened and the aftermath.
At this point, we get it. For a sport that relies on choreographed moves and fluffed up gimmicks, it was a huge deal that just went on and on.
Easy! For Sonic fans, especially us older fans, it’s always new Sonic game bad after a game launches, for the most part. Sometimes it’s deserved, like how buggy Sonic '06 is or how character turning on the 3DS port of Sonic Lost World is horrific IMO. But sometimes it’s just something like people not liking cutscene changes in a remaster( rerelease? ) of an older title ( how I personally feel about the Sonic x Shadow Generations cutscene and dialogue changes ).
Just like most fandoms, I swear Sonic fans are never truly happy, unless it’s something like Sonic Mania. And even then I have heard people complaining that they should have just made only new zones instead of the few they did reuse from other of the old 2D titles.
I, for one, cannot escape the new game bad thing myself considering I refuse to touch the latest racing game on account of me believing the Riders series was and is infinitely better ( so long as anything Free Riders that isn’t the Crush40 song Free is included ).