You have your coworkers on an unmanaged machine with a foreign OS on the guest WiFi with custom networking.
Which, at any of my last few corporate jobs, would be grounds for termination, if not immediately throwing you out of the building and telling you if you come back we're calling the cops.
You really don't bypass controls in a corporate environment like this if you like working there.
(And yes, not EVERY job will react that way, but any that's got any compliance requirements absolutely will.)
You're not wrong, but the biggest flaw Peertube has is that the search on an instance is utterly worthless and defective.
They do have a good search engine for finding content you might want to watch, but they don't use those results in the instance-level search which befuddles and confuses the shit out of me, because you won't find shit you actually want to watch.
https://sepiasearch.org/ is where you probably want to start, but yeah, there's a LOT of Linux shit, but you can at least find other things when you use a non-broken search option.