IP address is only for governments I think. It works for them to catch you in case of lawless things
If you took 1 min to read the post above yours, you would know that claim is nonsense. An IP address doesn't have to be linked to the real user/scammer/hacker. You can use TOR/VPN to mask yourself. Even though some VPN providers have logs, so it can lead back to the user, however there are still VPN providers that don't store logs. Than you have the use of public WIFI (for example burgerking wifi) this will lead to nothing.... Than you have the possibility to RAT a victim, use his IP and do whatever you want.
You can leak the ip address of scammers, however for every perma-ban an IP address gets evil points. I don't know the exact calculation, but after x evil points the IP addres is blacklisted and can only get whitelisted after paying a donation in BTC.