I don't think I'm the smartest guy in the room, and that's OK. I realised a long time ago that ego/arrogance isn't a great quality and it's far better to have a strong network of friends and supporters, and that doesn't happen if you're an arrogant prick.
And yes, he built the language (which is totally un-needed) because the "idiots" who made all the existing languages, didn't make one as good as in JBlows brain. Despite the fact that there are 1000s of games which are far better than anything JB has made written in C#, C++, Java, Rust, etc. Did Larian need to write a new programming language to make Baldurs Gate 3?
Only JB is arrogant to think that only a new language is good enough for him to make a game with. A game that is just a modern spin on Sokoban and where he paid a bunch of other game devs to use their puzzles! You could write this shit in three.js and it wouldnt look or feel any differently.