I haven't watched his videos/podcasts for a few years and I too didn't recognize his voice. He used to have a very strong articulate voice, he sounds a lot weaker - almost like he has emphysema.
Sad to hear it really, yes he has thrown the odd dodgy comment around, who hasn't really, so I can forgive him for that. It's easy to throw that up in his face, and I'm sure lots of people have over the years since his diagnosis, I'm sure he regrets it massively given what has happened.
He can still fight, but realistically the best thing he can do is make himself comfortable. From what I've just read, what was posted on his behalf on reddit, that sounds like what he is doing. It's sad that young people like him die to a cruel disease, especially as he was so motivated in the gaming scene - gutted really...