Your co-worker needs to have his eyes checked. And his brain.

Many guys understood better the ass-raping in S.1. Then got scared
to see that Toby, the man who had walked into OZ a straight guy they could identify with, changed his sexuality in S. 2 and 3.
They blamed Keller for that and hated him for it.
In their subconscious, they were terrified that something like that could happen to them, if they were in Toby's situation in jail.
I read this point in an essay about OZ.