but don't evil fees play any role for those people? Do they pay for new accounts, or do they somehow slip through the system?
Yes those exposed ones have found a way to slip through the system. With a very strong VPN you can change your device IP and location which the system won't be able to detect again. And they will create a successful new account over again and start with their spamming. If it cost them money to pay for those evil, they could have stopped long ago.