The only downside is that even though it's just a config file it's still a bit involved to set up. But IMO worth it.
Discussion
Let’s pretend i would be capable of setting that up (doubtful, i’m using umbrel for a reason). Are you saying this can be a vpn for my raspberry pi node specifically as opposed to my phone or computer?
It can be both.
For instance I have a Wireguard network set up on my node at home and use it to log in remotely. Then I have another Wireguard network set up on a rented server somewhere and use that as a traditional VPN when I'm browsing the web but want to hide my IP.
There are lots of possibilities once you learn how to build virtual private networks :)
