Why whenever there is a troll in other thread who is also a glory hunter in their view, they always referring us as a glory hunter?

for example: other fan can't stand with the club's form, he/she insulted the club. The the other member reaction is like: go support mu and join their fan who don't know nuts about football.

i really can't stand this. Why they always referring Man Utd fan as glory hunter fan without knowing them well. Like they know every man Utd supporter. Like Liverpool, Arsenal and Chelsea fan have no such fan. really hate this.