I don't expect him to do a complete 180 on his standing on Josh, but I think someone really needs to get him on stream and press him on some of the heinous shit he said. You know, like how he called Josh a pedophile repeatedly for years, or how he gleefully fantasized about Josh getting arrested and raped in prison. He doesn't even have to make friendly with Josh, he just say something to the effect of "I have my issues with Josh and I don't intend to speak to him any time soon, but it was still wrong for me to call him a pedophile just because he made fun of me, and for that, I'm truly sorry."
Then if he's so inclined, he can continue to hate Null to his heart's content.