[cesaref]

This situation happens with plenty of compilers for plenty of languages. It's just software after all, we don't expect any software to be perfect, so why expect compilers to be perfect?

As for deprecating old C++, yes, I can see the appeal, but no, the community hasn't gone that route. C++ has always been a 'mix and match' approach, with different parts of the community using more or less of the language features, with the intention being that you can choose what to adopt when, and move older code bases forward (or not!) depending on individual concerns.

It's one of the C++ strengths, although it doesn't always feel like it.