> I feel like once a language is standardized (or reaches 1.0), that's it. You're done. No more changes. You wanna make improvements? Try out some new ideas? Fine, do that in a new language.

Thank goodness this is not how the software world works overall. I'm not sure you understand the implications of what you ask for.

> if they aren't cheekily mutating over the years

You're complaining about languages mutating, then mention C++ which has added stuff but maintained backwards compatibility over the course of many standards (aside from a few hiccups like auto_ptr, which was also short lived), with a high aversion to modifying existing stuff.