In fairness, I get irritated about the fact I need to tell WebEx to use my computer's audio to join the call every damn time I join a meeting quite annoying.

If only there was some happy middle ground between never asking and always asking ...

For me the problem isn't that it asks, it is that it forgets (and they don't have the same options consistently across hosting orgs).

I'd be totally fine with default-on voip sound - with a red, muted mic button and a bubble saying 'tap to unmute'.