No, Tor is slow and VPNs cost money. I doubt most on any social media use any type of iP obfuscation because they don't care or that they trust that the servers they use are safe.
Discussion
I'm a little shocked with the types of users nostr has. Currently.
IVPN. No email or username. Pay over lightning or on chain. Like 140k sats for the year, 250k for 2 years.