If you are male, most people consider an accusation of sexual harassment or misconduct to be absolute proof.
It's more than a male thing with teachers et al at the absolute least. Pretty sure I see more news in that field about sexual impropriety coming from women. Part of that may be because it's only news when a guy is behind it if things are particularly egregious, though. Never seen anyone attempt to actually sit down and gather/crunch numbers on the subject... which isn't entirely surprising, considering a lot of the stuff never makes it past local papers at most, and it's a complete bastard to track those over a large area/long period.
You know, it's actually really, really surprising that it's this bad. Is America full of paranoid people that think that everyone left alone with someone else is automatically going to rape them?
Full of that particular sort of person, no. Vast majority of people don't really have or cause a problem on that front.
But it only takes one, and particularly if you're dealing with dependents of one sort or another (kids, elderly, whatever) you'll rapidly find that there's almost always one or two parents/guardians that are basically
completely fucking insane. They're the sort the kind of practice you quoted is aimed at.
One solution that I actually think is pretty smart... is a news embargo on rape cases until AFTER the result of a court case.
That's actually rather notably stupid when dealing with this particular class of crime. It's rather far from uncommon for other victims to come forward when they see someone else accusing their attacker, and that can be the difference between a rapist or serial sex offender of some other sort getting out and having a few more goes and not. There's false claims as well, but there tends to be those for any class of crime that can involve witnesses or multiple victims. Part of the point of our court system is to filter those out.
Though regarding undercurrents and whatnot, it's... not really that, exactly. We've got decent data on reporting and conviction (and successful appeal) rates. We're entirely aware a lot of people get away with it.
... all that said, yeah, a lot of the stuff regarding the sex offender list and a number of lesser/non-crimes related to it is all kinds of fucked up. For all we do have problems that need to be addressed, there's some pretty damn serious issues with how we handle laws on the general subject.