https://www.schneier.com/blog/archives/2020/04/security_and_pr_1.html
This might be the best one-sentence summary: "Zoom's security is at best sloppy, and malicious at worst."
And their reactions to past security-related issues have a definite "we don't really care" attitude, though that seems to have improved recently.
And I agree with your point that they are "focused on growth and features over hiring the best security/bughunting staff". That would actually seem to give further credence to their security being "...
Some info about how medical professionals use N-95 masks:
"Fit-testing" seems to be a requirement on an yearly basis. I'm not sure how rigorous or involved that is, but that seems to be an indication that it's not as simple as "civilians" just buying them and wearing them.
They're only intended to be used as one-time use masks. Apparently, healthcare workers are supposed to use a new one for every patient. Plus, they don't prevent viruses from infection via your eyes.
Are you self-hosting? I use this plugin, which disables the new editor: https://wordpress.org/plugins/classic-editor/