I wanted to let everyone know that this item is being worked on right now and we are hoping for some great news in early 2021 about it.
Every 0365 teams sites are connected to a SPO site collections You can therefore go to that site and migrate to it if you are the site admin.
We are working on new improvements to make moving to Teams even easier.
Thanks for the feedback. we are considering on how we might make that experience better.