On the other hand I am mystified by all the security hype. Yes I might be able to guess a Zoom meeting ID, just as if I might guess your phone number and prank call you. In a Zoom meeting you can see who is connected. In the old days of conference calls do you remember asking “who’s on the line?”. What are you talking about that requires encryption?
If so there are tools for that - signal, etc.
The UK are using it for Cabinet meetings - https://www.bbc.co.uk/news/technology-52126534
And UK officials say the risks of not communicating in the middle of fast-moving events far outweigh the possible security risks of using such a system.
They add most government work to do with the coronavirus is unclassified and anything highly classified is communicated over secure systems
Government meetings use the paid-for version of the system and are password protected to prevent "Zoom-bombing", when uninvited individuals intrude on calls.
The UK Ministry of Defence also said Zoom should not be used for classified conversations.
And it is understood Nato's policy not to use Zoom for any meetings, briefings or conversations between member state ambassadors if classified or sensitive information is shared.
Nato staff are understood to be using "more stable and secure" means of communication.
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They seem to be perfectly well aware of their threat model
There is really no reason to give this company the benefit of the doubt in any regard.