> So for now Skype and MS Teams works fine, or at least fine enough that I don't bother with Zoom. Which brings me to a side question: what is the value proposition for Zoom? What does their product do so much better than the others that I'd put up with this shit?

For me, it's one of the few video chat clients that works well in Linux. Skype may or may not work depending on the version and whether or not Microsoft supports the Linux client. And I have no idea whether MS teams works at all in Linux.