There’s some faulty reasoning here.
Parent comment challenges the assumption that the marks were made by a female, and you say “you’re the reason the professor felt the need to give this example”, although the example was given in order to challenge assumptions of gender.
OP is actually learning from the example if anything, since they are challenging gender assumptions.
On top of that, your use of “you guys”, and your generalisations about men are evidence of the exact type of biased thinking this example is trying to challenge.