No he hasn't. Judges won't be paying for any of that. The TO is the one held responsible and it's strictly punitive enforcement if a scandal occurs. WotC isn't going to be verifying background checks or reviewing them. They wouldn't have the infrastructure to collect and verify that kind of data if they tried.
What he's going to end up doing is fucking over players. Judges are contractors and there is no legal entity that governs them, nor any budget. A TO in a small town is going to follow the rules and have background checks done for his employees and a regular store judge. Then, he's going to schedule a PPTQ where the judge has to cancel for some reason, and he's going to need to scramble to find a replacement or cancel his event. At that point, he has a choice: pay out of pocket to expedite a background check if that service is even available in his area, reschedule, or cancel and hope he doesn't get caught. Two of these options cost money, either cash or lost attendance. Which one do you think a small town independent shop owner is most likely to pick?
Judges are just volunteers. They're not WotC, and they have no control over the policy decisions about banning players. Even at major events, they *recommend* players for banning to WotC who owns the DCI# database. It's a big volunteer nerd army that enforces policy which they have no control over, and only the most senior personnel have any influence at all. Chasing down judges by sharing personal info in the hopes of doxxing was just plain shitty.
I'm glad they caught that one guy with a record. He doesn't need to be a TO or judge. Law of averages though, you're going to have sex offenders in any random sample of thousands of people. It was a really dumb idea to pick on independent volunteers because of something WotC did.