But a unique identifier in game doesn’t actually enforce bans, because what’s stopping someone from creating a new one? VS if you create a PSN account, you need some sort of verification (e.g. email address).
They could’ve done something similar with a non PSN login, though people would’ve probably still complained. And for them, it’s not 3rd party because it’s published by Sony IIRC, so it’s actually an in house system.
I also don’t own the game, but I just wanted to point out the reason in their argument isn’t entirely invalid.