Why protective custody? He's In with scum bags just like him. They should all get along just fine.
Because he is a celebrity. He will be a security risk in general population. Other inmates could harass or try to make him give them money. Or they could take him hostage thinking they could get something for it. The chances are that it likely wouldn’t happen, but why take that risk and have him in general population?
He is basically a security risk by being who he is. That is how the security protocols work in Delaware, it could be different in Pennsylvania. I haven’t worked in a prison in years so it has probably changed.