alt Hacker NewsBun getting rewritten in Rust is not really the counter point you think it is. The rust version hasn't shipped yet, so there hasn't even been a chance to see if the code can be maintained. It's an impressive feat no doubt, but until they've maintained it on a months to years timeline, it's also just talk with no evidence.
His comment doesnt even seem written by him, too busy doing nothing in a self driving car while codex work for him