I really don't want to make a Microsoft account but many job interviews are held on Teams. I see that there is a web client which I will definitely use instead of the unofficial Flatpak for Linux.
If I create a Microsoft account with one of my privacy friendly emails (custom domain), would Microsoft start to receive the emails that that account receives? If so, would you suggest that I make a burner Microsoft account for this specific use case?
When you get invited into a Teams call you don't need a microsoft account to join as guest. you'll get the web interface probably.
Indeed. I always connect as a guest through the browser. Never had any issues.
Your mail goes where your MX records point. Microsoft will only see the mail if you move your mail to exchange.
I may be wrong but I don’t remember needing a Microsoft account for the web client. Click on the link, accept the usage of your mike and camera, and it should be enough. Open a private window if you want more privacy and I’m sure it will still work fine.