Sadly it's what many people think, that's why I don't really tell a lot of people I watch anime, (especially how much lol). It's not really accepted where I'm from.
But I always think when I hear people say that it's for little kids, that most the 日本动漫 i've seen I wouldn't want kids to see. I think there are 更多 serious animes out there than not.... 或者 at least I guess those are the ones I stick to. No.6, Wolfs Rain, Another, Code Geass, and Psychic Detective Yakumo are just a few of those animes that take there audience very seriously.
To be honest I've never actually heard anyone say that...
But some shows are for kids and if someone wanted to think that, it's fine it wouldn't really bother me. If they're saying something like that they probably don't watch much 日本动漫 anyways so it doesn't really matter.
those people literally don't know anything. It's like saying "oh it's a comedy movie Adam Sandler is definitely starring in it." Like typically the only 日本动漫 I can think of that's purely for kids is Pokemon.
When ever someone says 日本动漫 is for kids I look at them and say..Can 日本动漫 make 你 cry..does 日本动漫 have porn..does 日本动漫 has romance..does 日本动漫 cuss..does 日本动漫 scare people, yes it does and Im sitting here like now 你 know :L