I don't believe it is true that its all his fault but the common sentiment due to the types of dating advice you see is that people believe you have more control in who likes you romantically than you actually do.

I believe you can control how many people like you as a friend but do to the innate existsence of compare and contrast, and competition in dating I don't think you control who likes you to the degree that not having a woman interested is always your fault.

Beyond objective physical standards you are always competing with other men in a womans head, men that they don't even know exist sometimes especially when it comes down to attraction at first sight. You compete with guys in your social circle for whom they deem as datable and not datable to deny this would be to deny in a friendgroup there's guys the women would say yes to and no to in terms of dating. You compete with the good parts of her ex, which is almost always looks, sex, how exciting or interesting your life is/how charismatic you are and financial status. You compete with attractive men on tiktok or instagram if she views any or has enterained any in her dms, it just raises her standard for looks of her ideal man. This is partially the reason men prefer less of a body count with thier partner, less of an enviornment for tangible comparrison along side the MadonnaWH-complex.

On the more involved portion like already dating or progressing a relationship at different pace than previous. When men raise issue with being treated different from an ex date, lover etc or the timeline of events of how the relationship is going is skewed more so in the past date/lovers favor in terms of proof of passion. Women are always extremely eager to point out the mans lack in comparrison and have it be ok due to supoosed deeper feelings. "So what if she slept with him earlier than you or can acknowledge he's more handsome, she cares more about you and what you think so she is taking her time" the acknowledgement of the differences still proves the reason on why things not progressing the same pace is an overall issue; he is not up to par with the past lover interms of looks, sex appeal and possibly attitude.