Whaaat?! The man is not joking apparently:
https://www.reddit.com/r/haxe/comments/dwpvm7/pok%C3%A9mon_s...
This feels a bit like "Game studios HATE him! This ONE secret they don't want you to know, will make you 10x Game Dev!"
Crazy, and neat.
Around the transition to Xbox One and PlayStation 4, I know Haxe was considered an option for ActionScript/Scaleform codebases in certain AAA studios.
Who says it failed? Haxe is alive and well, even if it isn't a mainstream programming language. Even the latest Pokemon game used Haxe!