An interesting thing to also note is that their public signing key has a typo on it ("Zoom Video Communcations", missing an 'i' in 'Communications'). It might be a benign mistake, but as an occasional tin-foil hat wearer, this raises some flags.

I reported it a couple of months ago, but the initial support rep. didn't seem to know much about cryptography. I forgot to reply then, but seeing this article pushed me to remind them to look into it with an explanation and request for escalation.