The industry isn’t ‘trapped by the language’, there genuinely is no practical alternative. If you want to write an efficient piece of software like a game that’s portable to as many different platforms as possible, you’re going to be working with C++.
This said, if all you want to do is change a single value, you should be working with instances in the editor, not changing them in code. You can expose any variable to the editor and change it either inside the editor, or at run time without the need to recompile code. This is a workflow problem, not a programming language problem.