The goal is to make such things impossible or irrelevant. Know the system and work around it. 

One way is for every user to have their own proxy relay that directly connects peer to peer to other users' proxy relays, running on sovereign personal servers in the cloud (or in your home + an IP-cloaking remote proxy).
This is what we're enabling at  https://vaporware.network 

Another way is going extremely hard on mesh networks and various darknet protocols. 

There is always a way. Privacy will win.  

https://image.nostr.build/46346879bfd9b53fdd4f85597a8c4585d95486caee746e255bc16241fa20aad9.jpg

You can read the rest at blog.vaporware.network