I think you're referring to automatic switching, which is a much newer feature. That indeed is broken iOS to macOS.
But the instantaneous switching works fine in my experience and has since the original AirPods.
But the instantaneous switching works fine in my experience and has since the original AirPods.
I'm not sure why, instant handoff between a laptop and a phone seems like such a natural workflow for anyone who does a mix of phone calls and videoconferencing.