I think this is an alternative to VPNs instead of Tor. If you want your IP address to be private no matter what, you have to also connect to nostr relays with something like Tor. And if you have a VPN that you trust, you don't need to tunnel traffic over Nostr in addition to that. Or did I miss something perhaps?
Using VPN doesn’t mean you have a static public IP address. It doesn’t mean you can easily configure your computer to become a server in a way that allows others to initiate a connection with it. I think Tor can give you an onion address, based on your public-key, so it remains yours even if the network changes.
Aha, I see now. It wasn't clear that it's all about hosting. Thanks for clarifying. Personally, I use ZeroTier or Wireguard for these things, but it could be interesting in some cases still. I think it still doesn't quite replace the privacy of Tor, but could be useful for convenience and/or speed of deployment for certain things.