[marloncots]

That would be frustrating to tell them your preferences and then be completely ignored. On the flip-side, there are some interviews that are specifically testing how you are at familiarizing yourself with a new-to-you framework or codebase. It might not have been the case here, but for example you can learn a lot about how a person learns and works if you give a skilled React developer a project in a framework that they are unfamiliar with, like Angular. Of course, documentation and other resources should be available during that interview as well.

Again, not sure if that’s what was happening in your case, and giving someone a different OS would only hamper them if they were unfamiliar with the environment. Personally I like the challenge of learning a new framework, so long as that’s the intention of the interviewer.