The "I want the total package" unrealistic-expectations person is prominent in both genders, even if "no fat chicks" t-shirts aren't as popular as they once were. The slob-with-hot-wife TV trope probably hasn't helped men's expectations here.

The "I'm gonna send a thousand dick pics and see who is down for a hookup" behavior, on the other hand, seems predominantly male-dominated. Even the women looking for hookups don't operate like that (you could debate chicken-and-egg here, around how they don't ever have to with all the dudes throwing themselves at them, but I'm not too interested in that). Those men result in a worse experience for BOTH women and men, but in a more acute fashion for the women on the receiving end of the creepiness than for the men who just have to try harder to manage to stand out above the background bullshit level.