I didn’t see what exactly they’re using for a Teams replacement?

Politics and memes.

Social media is a terrible source for accurate, unbiased information. And memes are low quality content that shouldn’t be consumed by anyone.

How are you labeling users?

Garbage tier IMO. So much worse than Gmail in terms of UI and legit email going to spam or not being delivered at all. So if you’re going to use a free one, just use Gmail.

Maybe Google Voice is factored in?

Ironic since you have to buy a Google phone to use that OS.