I think the real issue comes from once-removed tools. The people writing a tool that you use may have access to and adhere to some ISO standards, and that information may be quite helpful for debugging while they're building their tool - but it doesn't really help you all that much since you lack access to those same standards.

The C++ standard is pretty different and an interesting example here, traditionally there were portions of the standard that weren't really accessible and that, in part, contributed to different compilers not being called out on differences of opinion along with the ability to have differences of opinion not being called out by experts since they didn't have access to the standards to see where those contradictions lay.

In the modern world the C++ standard is what I think ISO should aim for with all their standards, it is widely available and heavily discussed and that feedback has allowed the standard to grow by leaps and bounds as the language has adopted things once seen as impossible (outside of Qt & boost) like foreaches and not-terrible-to-work-with lambdas.