If that's really him then him changing accounts is a way to get people (like you) to stop harassing him 24/7 and bringing up "p-child enthusiast!!!!" everywhere he goes.
Here's some life advice: if you have a feeling that people will make fun of you for something and you know that you won't be able to take the banter,
don't loving tell them about it. It is completely willy's fault for saying publicly that he is/was into cub stuff. This was one choice detail that he could have sat out his entire forum career without sharing with the world.
People who make fun of him equally share the fault, but you can't change that lot and Willy definitely isn't their first target. Laying low and trying to take it in stride or leaving are the only two reasonable options.