This might be exactly the purpose of this thread, but the question in the title had me wanting to chime in.
Why are people so focused on game popularity?
Well I find that the games that are popular or the ones that aren't is what shape the market. I have preferences in games, and in a lot of cases, my preferences do not line up with what a lot of the most popular games are. The games I really like don't always do well either. Combining those two situations can suck for me getting the games I want to play. It hasn't hit rock bottom yet. In fact, I think a big part of why I supported the Switch a lot, is it got a lot of the JRPGs and niche games I like to play. It still feels like the type of games I like are always at risk of not being made a lot, because publishers look at what the popular games are, and they keep trying to throw their eggs in that basket. It's why we got so many throwing great single player game studios being forced to make a GaaS game that no one wanted. If their GaaS becomes popular, then that studio is forced to work on that for the next decade. If it fails, we're lucky if the studio is not shut down.
In other situations like...why should I be annoyed that something like....I dunno, let's use Assassin's Creed as an example. Why should I be upset if that franchise does well? Even before Shadows had it's big controversy, and we had a few decent AC games, in a vacuum, that would be alright. However, what ended up happening is you have a bunch of other studios wanting to copy what AC games do with open worlds, and turning their entire games into checklists. I think the only position AC copycat was breath of the wild, but every one else who tried to copy that template just made boring ass games. Metal Gear Solid The Phantom Pain did NOT need to be an open world game, and it was less fun for it.
I don't want to keep rambling, but I hope I made my point.