imo its because so many people now seem to define themselves by the particular bits of trashy popular culture they consume (including video games) and so then when someone likes what they dislike or dislikes what they like it becomes a personal attack, an attack on their very selves. This is pretty funny because its all about video games which are just fancy toys.
That's a weird thing to define yourself by. Honestly, some of these "fandoms" kind of creep me out with how extreme they get. The games I'm into (or books, shows, whatever) is like, the least interesting thing about me.
