Yeah, but the naivety of people believing in secure clouds needs to die. So if this helps, I’m all for it.

Can, but shouldn’t. I have a work related Teams account, and one where I tried to rent a Windows VM for a consulting job. That’s it though - no private data to get leaked. The work conversations would suck though, but I’ll happily remind my boss et al why using Teams is a shitty idea in the first place.