I've learned my lesson about saying 1 of 2...and I was right, this is going to end up being 3...
since sessions are recorded, I don't see a lot of problem using meet.jit.si, but we could pick a different server: https://ladatano.partidopirata.com.ar/jitsimeter/ -- I do wonder if the "No Tracking" ones allow streaming via YouTube though. For example, the suse server does not. I checked a few others and didn't see any that did.
theoretically, we could host our own, but not sure that makes sense at our current scale.