Reading the above article, it seems for the government to put people in jail seems so casual. “Just put those perverts in jail for Halloween.” However, those in the sex offender registry are people and who may have developed fear of being imprisoned again (I don’t think people in general would want to go to jail). That’s why the labeled citizens comply even the absurd laws so they can be outside (even though, being outside is more and more burdensome and one simple mistake away from being imprisoned).
There is the psychological terror of being sent to jail, which may be (like) PTSD. But it does not matter to the government and the low enforcement officials (including the overlords at the probation). The society does not care either. Everybody needs to protect the children, after all.