Posting on GameFAQs is weird to begin with. So it doesn't matter what your pro pic here is as long as it isn't something nasty
On social media websites, it basically lets everyone know you're a geek. So "weird" yes but acceptable enough as long as it's not some hentai type shit like a waifu or worse a shota/loli. franky the worst people on these sites aren't the ones with anime pro pics