That's a very big IF. Their goal seems to be to attract an (or more) attractive woman(women). There is no indication that your assumption is in any way correct, and I've no idea why one would assume this.
Your post came off as dismissing their goal of attracting a mate. I just reread it, and it still reads like "If they want to get the CORRECT girls, they're doing it wrong."
What you consider to be "correct" or even "sensible" is completely subjective.
Their criteria is obviously not to get girls that is "correct" under your definition, it's to get girls that are "correct" under their own definition.
If they simply want to impress girls enough to get them to agree to a date, then what they are doing actually is "helpful or conducive to that goal".
Making way too many assumptions, to include interjecting personal beliefs on how other adults should or are suppose to meet.
These are adults, that have the right to choose how they want to approach and interact with each other, as long as its consenting and legal.
It also comes off as a denial of agency and choice of the adult women involved, as if they can't freely decide to enter a relationship or not. Thus we have 3rd parties wishing to involve themselves, where arguably they should not be placing themselves, to attempt to decide for them (interloping teacher or college) by villainizing or criminalizing the male students. Which at the end of the day, is actually what's wrong.
Actually, no. If you want to ban stuff or stop an activity between two consensual adults, you better have a damn good reason, other than it offends me!
They appear to be doing just fine with the girls, which once again makes me question why you think that the girls who welcome these advances are behaving incorrectly.
Everything else you say is purely wishful thinking on your part and there is literally no evidence that the males are not getting whatever it is they are aiming to get.
The complaints, remember, are not coming from those girls who date, it's coming from the professor (who is unhappy about this), and from the girls who aren't getting advances.
The TLDR is this: There's no obvious evidence for any of your conjecture about how courtship should go; in this case it obviously is going correctly if the girls who get advances aren't complaining, but the ones who don't are complaining.