Yes. Exactly in the same manner.
But too a much much smaller degree. Because rape accusations (false or true) are so rare to begin with that a history of them not happening is not that big of a deal, probability-wise.
That would be more analogous to saying so-and-so has a history of not raping people so it’s less likely that he raped someone on this occasion. On average, the likelihood that any given person has committed a rape is greater than 0%, but not by all that much, so establishing that it’s 0% and not some tiny bit above 0% doesn’t change the odds all that much, even if it does change it to a very small degree.
IMO it’s extremely clear.
“Mathematical realities” are just about putting numbers on probabilities. But the probabilities themselves are more about logic.
It’s not mathematically impossible.
There’s no reason for it to be mathematically impossible and it’s not clear why you think it should be. It’s very likely that recent virgins (henceforth RV) are less likely to have sexual encounters than “casual sex fans” (henceforth CSF), but it’s theoretically possible that they make more false reports as a percentage of all reports. But you would need a pretty big skew in he percentage of consensual encounters being falsely reported as rapes to overcome the difference in the number of encounters. For example:
Suppose a random sample of 100 CSF has 1,000 consensual encounters in a given year and 10 non-consensual encounters. They report all 10 non-consensual encounters as rapes, but they also report 1% of consensual encounters as rapes. That adds up to 20 rape reports, 10 of which are false.
Now your random sample of 100 RV has 10 consensual encounters in a given year and 10 non-consensual encounters. They too report all 10 non-consensual encounters as rapes. In order for them to match the number and percentage of false reports, they would have to report 100% of all consensual encounters as being rapes. If they only reported 50% of consensual encounters as rapes, they would still be accurate 2/3 of the time versus the CSF 50%, even though the RV group is 50 times more likely to falsely report a consensual encounter as being rape.
Of course, all the numbers above have no relation to reality and just intended to illustrate the general concepts.