And screen sharing, like actually good screen sharing unlike Microsoft teams That is a huge feature for many people

What's wrong with Microsoft teams screen sharing?

Only one participant can stream in a call. An arbitrary restriction that I just dont understand. You also can't properly full screen when you're viewing a screen share, for whatever reason....

It's also a UI that makes covert (bot) advertising basically useless. Any form of communication that is not one-on-one-real-time has a bad UI and is heavily deprioritized.