I guess I don't hang out in the right places. In any case, it's the fact of jargon that's accepted in vidoegames, not whether a particular genre label is appropriate. No-one accuses you of gatekeeping for writing 'uncanny valley'.Are you kidding? Videogame jargon is incredibly contentious! Metroidvania is a prime example, with a devoted crowd that still resists using any particular game as the basis of a genre, prefering to find some kind of gameplay loop descriptor instead, leading to endless articles about whether or not we should keep saying Soulslike or Soulsbourne. We're just starting to settle the question of what differentiates Roguelite from Roguelike.
Have you seen the debates playing out over the correct genre name for the games derived from Vampire Survivors and similar? So far we've got Survivors-like, Survivors games, bullet heaven and busted/broken build games just off the top of my head.
To say nothing of how fractious criticism can be in videogames! There was the whole "objective review" concept from a decade ago (which admittedly led to dogwhistling for misogyny and then just outright misogyny) to the contentious question of scoring.