It still bothers me that game engines come with their own bespoke languages like GDScript. Godot is a bit better than others for having C# support and forks in other languages but really no other language will ever be as integrated with the framework as GDScript, And GDScript is never going to be a general purpose programming language, and that necessarily creates lock-in.

I'm currently messing with some old projects written in Game Maker 5 and let me tell you it would be so much easier if I didn't have to do internet archaeology just to figure out how GML worked 20 years ago.