It works for me with GNOME and Firefox 93, your colleague may have to update. Not Google Meet but I did it successfully with Jitsi. But I am referring specific

It works for me with GNOME and Firefox 93, your colleague may have to update. Not Google Meet but I did it successfully with Jitsi. But I am referring specifically to the developer experience I had with the API, not the progress of any given application in implementing this API.