I browsed the comments of previous Asahi Linux posts with "show dead" switched on and that's all I could find. I couldn't care less if he presents himself as a cartoon character on his video streams, I only mention it because that's what the flagged comments on those posts were arguing about.
Perhaps you could link the comment threads that you believe is evidence of what he's saying in that message?
That sounds highly unlikely given the strict moderation on this site. So unless I see any evidence of it, I'll continue to assume otherwise.
From what I can gather after looking at previous posts on Asahi Linux, as another commenter suggested, the author of that message is furious that some HN users were talking about a cartoon character alter ego that he uses to make video streams. Seems to me like he's overreacting a bit.
Perhaps a better approach would have been for Linus to design his own backwards-compatible and safer fork of the C language, and have the kernel gradually rewritten in that.
He's already written - with a considerable amount of collaboration of course - the world's most popular kernel and the world's most popular source control system. I expect he'd be able to do the same for a new and improved systems language if he put his mind to it.
Perhaps you could link the comment threads that you believe is evidence of what he's saying in that message?