why do fgc players hate games like brawlhalla/rivals of aether/smash ?

brawlhalla has the biggest price pools and most consistent pro scene out of any all of the 3 games are fighting games and hating on a game cuz its a plat fighter is cringe brawlhalla has the most players out of any fgc game so it deserves its respect i dont even play it but why hate it ?