As Gary said, the game servers hosters need to be worried. Because if they have a server (multiple server) from 1 ip that is using a fake population, he will blacklist first the server ip:port, then server ip. And never unblacklist the ip.
So basically if game servers hosters don't watch for fake population client hosters they will loose IPs by IPs. it's remotelly easy to check if a server is fake or not, they just need to find a way to implement an auto check.
the problem is that servers seem to be falsely blacklisted.