They have to name every possible thing they can potentially receive. Mac addresses are available as part of networking details if you're using their desktop software. Zoom is enterprise video conferencing that only recently gained attention for average consumers.
That's not how PII is defined nor how privacy policies work. They list potential PII received in standard categories with normal product usage and backend processing.
Otherwise every server on the internet can be sent data by you at anytime which effectively makes listing things pointless.
No it's not. As I explained, it's well developed legal structure that's used by several countries for major legislation and has decades of precedence. There's also further complexity on how data is submitted, stored, and processed.
Any random file is not considered PII. It doesn't automatically identify you and it's still your responsibility if you send your private files everywhere.
How do you know that? These statements leave other possibilities open:
It covers all Personal Data that you affirmatively provide during your interactions with us, information that we automatically collect when you interact with our Products, and information that we collect about you from third parties
Whether you have Zoom account or not, we may collect Personal Data from or about you when you use or otherwise interact with our Products.
It says "when you use or otherwise interact with our Products."
It's not unreasonable. I'm not sure what your claim is here, because you'll find this language in every single online business. You realize Zoom sells enterprise video conferencing right? They have no use for your data otherwise.