Children amirite? Look at their smug little stupid faces as they sit there watching Teletubbies, it makes me sick to my stomach, but I've grown now, I don't deface their toys anymore
The point is, some games need to be for kids, and kids have the same right as everyone else to be online, and form communities, in which they
still act like kids. It's not really any sort of kudos to undermine any of that. Holding online communities to a global adult standard of discourse by it's very nature marginalizes children's experiences online.
Also, there tends to be an age-group in which everyone feels like they should dissociate themselves from childish stuff, say around 15-20 years old. In that range, people two years younger than you often seem ridiculously immature and people two years old than you seen ridiculously mature. So an 18 year old might get extremely defensive if someone suggests they like a show with a target age of 15 or less. And at that age, you're somehow probably really impressed by what the 20-21 year olds are into, because you think that stuff is more mature. :/
By the time you're over 28-30 you no longer give two shits about any of that (hence why most Bronies are over 30). The most likely scenario would be a 19 year old complaining about how people act in a community with a median age of 16. But to over-30s we think the 19 year olds aren't any better, they're just teens who have recently discovered "over 18" entertainment, and are equally insufferable to the 16 year olds, just in a more smug way because they can watch R-rated films now. Under 16s have a genuineness to their immature behavior that is in fact refreshing in some ways compared to the way older teens and college-age kids bullshit on.