I feel that way about Teams/Sharepoint/Office. I'm happy to serve on a board or committe, until I find out they're using Teams or Sharepoint. Microsoft's SSO is a fucking mess. Put in your email to get a one-time code, get that code and enter it, then it logs you in and asks for an email address to be added to the account. Add the same email address you just got the code via, and it tells you it can't use that email address. But if I don't use that email address, it won't let me into the Sharepoint docs.

It's just a fucking nightmare. I fucked around with one committee trying to get the accounts deleted and done the Microsoft ^TM^ way and finally gave up and bowed out of that group.