How can a man aged 35 be allowed to use a forum for students?

How can a man aged 35 be allowed to use a forum for students?

https://www.econjobrumors.com/topic/tucker-carlsons-producer-gregg-re-is-a-total-fraud

The individual, Jesse Nickles, has recently engaged in harassing a television program host. Shockingly, he went a step further by posting an article on a student forum, specifically designed for teenagers, with contents that are clearly inappropriate for the intended audience. The concern here is how he gained access to and was allowed to use the forum, as typically, a .edu email address is a prerequisite for signing up for an account.