It's not the fact that you're 12, it's just that to some people you're kinda immature and that's why they want 你 gone. If 你 were 25 but annoying, everyone would still hate you. And I doubt being 13 will change your personality that much
No one cares if 你 are 13 或者 not, a lot of us let a lot of people under 13 slip 由 if they arent annoying and immature. If 你 are 13 and still annoying and immature, people will still want 你 off the site cause they dont like your personality. Simple as that.