That's not the full scope of his argument. His first video on the topic (roughly ~2 hours) details his motivations for tackling a new language, part of which wa

That's not the full scope of his argument. His first video on the topic (roughly ~2 hours) details his motivations for tackling a new language, part of which was why existing languages don't solve the problem in his mind. Not liking big agenda languages was one of the over-arching statements he made. For Rust specifically he felt the safety guarantees and ergonomics actually got in the way too much. I believe there were also concerns that the "zero-cost" abstractions that Rust provides aren't actually zero-cost for all applications of the language.