He is actively developing his new game in parallel to creating the language.

Not to mention smaller projects like 'Braid- anniversary edition'.

>spent the past decade mostly ranting about Rust and working to make a perfect game programming language, instead of making games.

I wish. As far as I can tell he made a single hour long video shitting on rust and now he's the enemy of the cult. That's hardly spending the last decade sitting being mad over rust.

Why should he be making more games, instead of building his vision of a perfect language?

A machinist who retires from running lathes and goes into the lathe-making business has reached the pinnacle of that profession.

Writing games in C++ feels horrible which is a large part of he wrote the language.

I mean, he does like a good rant lol. But this seems like a bad take. The witness came out ~8 years ago, and Braid came out ~8 years before that. Braid Anniversary is launching next week, he's actively developing his language and next game (occasionally streams). "he's just resting on his laurels now" I think is clearly wrong