Bought mine around the height of lockdown to run pi hole. I would recommend having a look at the linus tech tips forum to set it up over headless install.
I think it's because they make zero profit from the pi zeros. Also - isn't the raspberry pi foundation a nonprofit?
https://pwnagotchi.ai/intro/ . cept yall need wifi.
You'd need to open the port for PiVPN to use but that's it. Generate oven file for them then they load that into OpenVPN Conect and the connect across the internet all encrypted. Once connected they can connect to your tvheadend server. Plex would be easier but need transcoding and I found it buggy.
So that’ll setup the point to point connection - no need for dyn/ ports etc...?