Whats your biggest pet peeves when it comes to the fandom?

for me my biggest pet peeves for the gundam fandom is when people who are into the military or have a military complex starts complaining about how UC gundam (or gundam in gen) is unrealistic and then nitpick everything from animated scenes involved tanks or jets to mobile suit designs they really just forget what makes gundam the way it is and how their setting and like story is like far different from real life