[DannyBee]

Stable in what way? Unless you want some new C++ features or something provided by the newer compiler, use debian's version or something.

The compilers are basically ABI stable right now.

If your complaint is support, well, yeah, nobody is going to prioritize fixing your bugs over someone elses if you don't pay them.

GCC does converge on stable releases, in the same way debian/ubuntu/everyone else does.

They declare they will not ship until there are less than X P1 bugs, X P2 bugs, etc.

These bugs get fixed, and the compiler ships. Non-primary platforms and miscellaneous bugs are simply an artifact of life.