C++ is perhaps the worst case, but C and Python also suffer badly. Java, C#, and Swift perhaps too.
Once a language reaches broad adoption, it should be frozen. If you want to make changes, then feel free to call it something else. The only good reason for standards committees is to resolve ambiguities in the initial specification.
It’s a misapplication of skills and interests. Language people want to add new stuff, fix old stuff, and make their language universally applicable. Putting them in charge of the spec is bound to end in a C++ style disaster.