There are people who believe that men should basically interrogate women in order to verify their consent even when there's no cause for uncertainty. That's just a thing. An unfortunate thing, but a thing none the less.
Much like how there are feminists who still legitimately believe that all heterosexual sex is rape. Extremists and all that rot.
In the vast majority of cases, it's men who have to initiate. That's just reality.
In the majority of cases that the majority of people who care about the subject care about, it's a dude and a woman and whether the dude is transgressing, which *is* the dominant paradigm of what people think of as sexual misconduct. Especially when you get overlap between the person strongly caring about consent as a social issue and the people who believe that sexual misconduct, coercion, etc. are only things that men do.
I would hazard a guess that either they're uncomfortable with the subject and believe that you chiming in will help speed up the end of the discussion or they're mad and hope you'll sufficiently chastise someone that they're mad at and disagree with.
My experience has been otherwise, both in terms of what demands I have encountered online and in terms of what I have dealt with from various partners.
Admittedly, less about whether they wanted to start a sexual relationship in the first place and more those times where they wanted to be seduced vs. just wanting to be left alone vs. wanting to interact but not being interested in or open towards things moving towards sex. Or other relationship woes pertaining to poor communication that aren't directly involved with the start or escalation of sexual encounters.
Unfortunately there are more people around than just the reasonable ones.
Yes, you shouldn't have been friends in the first place, but by that point you've flirted or asked them out and it's too late to take that back if they're going to make a stink about it or claim it as sexual harassment.
I believe it's partially because of concerns about there being a non-zero chance that a woman could lie about consenting to have sex and show no signs of uncertainty due to active deception and hiding of said feelings, but where the guy is culpable for the woman's unfounded fear and is thus a rapist in the eyes of a not insignificant number of people who, if made aware of his identity, could ruin his life even if the law never got involved, because she felt pressured even with no inappropriate actions taken on his part or even the appearance of such being given.
I certainly hope so, but from what I've seen of how people are talking about it out in the wild, it's very much forgetting that women should also say no to sexual contact they don't want, partially due to the reaction against asking victims why they didn't say no or struggle or put up a fight, etc.
This kind of sentiment also communicates to men that there is no way they can win, or rather, lose gracefully, when rejected. If moving on with one's life and minimizing contact with someone who doesn't want it is retaliation, then there's no winning move except to have never initiated.
I mean, I suppose that establishing a paradigm where women are entitled to the friendship of men who have unrequited sexual and/or romantic interest in them, even if they weren't friends in the first place wasn't ruled out, but that would be crazy.
Setting up a new cultural paradigm of requiring Enthusiastic Consent as the bare minimum would exert cultural pressures on subsequent generations to alter their way of thinking.
It could also lay the groundwork for changing what is necessary to make a charge of sexual misconduct able to make it to court and be tried.