Neither GCC nor Clang are compliant with standard C++

Hot take: I feel like a lot of the original value of language standards was to unite multiple proprietary implementations of compilers/runtimes/etc. from different vendors, each of which had incentives to add non standard features to attract customers and keep them locked in. This has been significantly diminished in the last decade or two now that most languages have high quality open source implementations - now you can simply port your compiler of choice to the platform you need.

Give how default gcc and clang are, along with the recommendation to update the standard instead of gcc and clang, it sounds like the standard is noncompliant with standard C++

Standard in the sense of commonly used or supplied

If you're starting a new project and can afford it, please for the love of the children, use a different systems language. In so many ways Odin, Rust, Zig, whatever are better. There will be growing pains with respect to collective knowledge and performance, but they are surmountable.

Context: I am a programmer and educator. I am so tired of informing people of these minutiae.

But looking at this, it seems like something similar happened 12 years ago[1]. Why hasn't it been changed?

[1]https://cplusplus.github.io/CWG/issues/1555.html

Shrug, then write a defect report?

Writing LLVM in clang compiles the micro-type into .html file system: x86 or ARM. Core libraries translate Flang into performance Fortran code.