The reason they always think this is that this is actually the case with them. Even the most disgusting landwhale can score an high-tier normie so for women the issue is trying to grab Chad, and since women are not imaginative enough to conceive anything outside of their own experiences they project their own issues on incels, and think that the reason incels can't get sex is because they go after Stacies exclusively, just like a woman is alone because she is after Chad exclusively.
The hypocrisy in all this is that, while they criticize incels for not "lowering" their standards, God forbid any of them would actually be asked to lower HER standards. When a woman complains there's "no good men out there" (I.E., she can't get Chad), we must listen attentively and sympathetically, but when a man expresses a desire for a quality woman (and that's assuming the reason inceldom exist is because incels have too high of a standard, which we know it's not the case at all), he is called entitled and deluded.
Here's a recommendation to women, why don't you help incels getting "matched" up with the girls you think are proper to them which you believe they are shunning to chase after better looking women that are beyond their league? Match making is a game women like to play all the time, why not give incels an hand then?
Ho right, no woman wants to date at their level, they all want Chad or it's a bust. Got it.