> Is this a bit of chickens coming home to roost as far as developer culture forgetting how to work with cross-compiling toolchains?

I don't understand your comment. Completely ignorning Rust the modern state of cross-compilation is an unmitigated disaster.

Linux is especially bad because glibc is badly architected pile of garbage stuck in the 80s. It should be trivially possible to target any minimum glibc version for any possible Linux hardware environment. But glibc and Linux distros don't even attempt to make this possible. Linux toolchains make it nearly impossible to not use the default system libraries which is the opposite of correct for cross-compiling.

Zig moves mountains to make cross-compiling possible. But almost no projects actually attempt to support cross-compile.

You mostly understand my comment, but not my graybeard perspective.

The modern disaster is exactly that developer culture has forgotten how to do this for the most part.

But, you're focusing on Rust compiling when I don't think it is relevant. If those weird financial platform developers were aware of cross-compiling, they wouldn't think that a developer tool like Git has to be built to run on the target financial server platform. They would be capable of cross-compiling or otherwise staging their build into that platform while still using Git on a supported workstation platform to manage the sources.