This. I personally can switch but how do I communicate with my other colleagues? It's hard to convey people to move into a whole new stack without significant effort.

FWIW it's gone all right with Google Meet as the usual suggestion from me -- though as I said, it's been only small-group chats. Most of my colleagues have Chrome.

If really necessary for some particular chat I can use Zoom's in-browser page, ignoring its ridiculous auto-download of the native client. (I didn't even know a page could do that, before.)