Some of you are talking as if this is a new thing.
I went to a school with a furry many, many moons ago. It wasn't sexual when we were in school, in the same way that boys and girls "going out" wasn't sexual - dating in schools rarely went beyond holding hands and kissing.
Yes, now that he's an adult, there is a sexual element to it - but he wasn't a danger to others, or at risk by others when he was a child. He was just a boy who identified as a furry creature. TBH, I don't think anyone other than his closest friends realised when he was a kid - mainly because he didn't have the money to buy a furry outfit then.