It’s not necessarily irrelevant (depending on the role). After interviewing a lot of people, I’ve found you can ask a handful of questions and get a pretty good sense for their work style (outside of technical knowledge).

That can be helpful in hiring.

If you’re looking to hire someone for a technical role on some big hairy project that might not work or seems crazy, it’s helpful to select for people who won’t say “this idea is dumb”.