Being in a fandom before another fangirl does not make you a better fan than them.
Like seriously. Stop thinking you're better then everyone else just because you were in a fandom earlier then others.

Yes, it is okay to point out that you were in a fandom since the beginning, and it is cool to be able to say that.

No, that does not make you more of a fan then someone who didn't know about the fandom right away.