I don't have Twitter but I understand how it works. It's for "social" interaction if I'm not mistaken. I'm not big on social interaction on media (other than occasionally speaking my mind here at 11 warriors). But if I did open a Twitter account, I would expect social media interaction as that is the purpose.
With that said, it does sound creepy when described as middle aged male following 16 to 18 yr olds. But I think that is a little out of context. I understand what the OP is saying. As a Fan of OSU football, why would it be considered creepy to wish a "congratulations" or a "good luck" or even "welcome to buckeye nation"?
after all, it is social media