Zoom is entirely banned at the two companies that are my day job, and probably 90% of partners. If you do any work adjacent to anything that's ITAR controlled you should also not be surprised to see the same policy from partner companies. This has been in place for quite some time since the initial security problem that was so egregiously bad apple had to resort to using the malware removal tool to remove zoom's binaries from Macos clients.

Entirely aside from their many past security holes which have been handled poorly , they have straight up lied about end to end crypto and what exact crypto it's using. That's before we get into the ownership of the company, its management and the location of most of the developers.