Anecdotal evidence--you haven't established that that sort of incident is the norm. Of course, that's just all the more reason to avoid being in ambiguous situations. Can you provide evidence that male university students are routinely and widely subjected to false accusations of rape?
The goal, and the practical effect, of this bill is to make it easier to prosecute someone being accused of rape. This bill further slants the process in favor of the prosecution. This is undoubtedly a bad thing for the defense.
The issue is one of fairness for the defendant in a criminal case. Turning an ambiguous situation into one that always favors the prosecution isn't necessarily a good thing as far as civil rights are concerned.
I don't think the term "widely subjected" is relevant. There are documented cases that false allegations do happen, the number doesn't matter. Even if it is rare, defendants still have a right to expect a fair trial.
More interesting are the cases that are ambiguous. There are cases where reasonable people will disagree whether a case is rape or not.
Deciding a criminal case by giving the prosecution all of the benefit of the doubt (by law) is deeply troubling to me, particularly in a legal system that is based on the principle of innocent until proven guilty.