It's true enough, but it never really felt like teams solicited feedback on their APIs or portal UX. Azure really only made this jump to using all public products internally recently; even the CI systems used by internal teams were proprietary until recent pushes to move to an ADO-centric model.

I'm also not certain that Azure really has the right internal pressures to produce great UX results. In my experience Azure's culture internally is very lackadaisical with only a few teams really pushing the platform forward.