Quite right, it seems that Teams for Linux is discontinued.

Guess this means I wont' get to run Teams in the company I'm joining, which is doing all its security attestation via Microsoft;

https://news.ycombinator.com/item?id=32678839

The web version runs fine in a chromium based browser.

It also refuses to run well in non-Chromium-based browsers.

Yet more vendor lock-in.

Yes even when I log into Outlook M365 from Firefox on Linux it's constantly kicking me out. Every time I get back to my computer it gives me this passive agressive "Please hold on while we're signing you out..." when I never asked to sign out. Grrrr.

I also notice it works way better in firefox if you set the user agent to Edge on windows. Some features which are broken in firefox suddenly work totally fine. Which reinforces my belief that they are simply doing this to bully people into using Edge.

There is a PWA you can install, with it's own icon and everything. Yes, it's a not-even-glorified-web-browser, but meh, it works (for some definition of works).

There is a native Teams package in the AUR which worked well when I had to use it. I assume it will get outdated eventually from lack of MS support. Web works of course.