The UK PM did tweet images of cabinet meetings containing the id, albeit after the meetings were finished. This turned into a few security stories e.g. https://www.theverge.com/2020/4/1/21202584/zoom-security-pri...

At the time, people were (at least) less aware of the password options for zoom calls, so it was easy to hijack meetings knowing only that id if the host wasn't careful.

I don't think you can be faulted for expecting this to have happened again.