I don't understand. I work remotely and regularly debug issues and brainstorm solutions with my teammates. Their physical proximity is not relevant. Clearly I am missing something.
Also I work on console games. I can't hand the person on the chat the controller and say "how does this feel?"
For me, I've worked in full remote and full in office jobs. I favor a mix personally. Maybe 2-3 days in office and the rest remote.