Not sure if people here are familiar with first and second causes but a first cause is the original cause for an event happening while the second cause is the second link in the causal chain created by the first.

Sounds simple enough right?

Applying that to the situation here, if a guy is rejected numerous times, he is likely to develop some issues with rejection, which would be a natural reaction to the situation. "Why am I getting rejected? Is there something wrong with me?" This may lead to developing insecurities about their appearance that manifest through inner turmoil like lowered self-esteem and depression, or outer turmoil like hostility or aggression toward rejection.

The first cause of someone being rejected is most commonly related to their physical appearance, which is fine because everyone has their pre-determined preferences for what they register as "attractive" or "unattractive."

Where this becomes an issue is that women act like they would have been interested in a man if it weren't for his personality but wouldn't have been interested in him anyway because he didn't meet the baseline for what they consider attractive.

"Its not because you're short/ugly/whatever. It's the insecurity about it that's the problem."

While this may hold true for some guys above the baseline, it's not likely true for the guys below it, and women defer to this second cause as a scapegoat to avoid addressing the first cause (they're not attractive enough) so they can blame men for being rejected ("Your attitude sucks") rather than addressing the real reason ("Sorry, you're not attractive enough for me") and seeming shallow for rejecting someone purely based on their appearance while hiding behind the addition of a perceived negative personality trait.

CMV

Edit: For those whom the topic/point of this post somehow managed to have flown over the heads of, this post isn't about men being rejected, or about men needing advice, or about me, or about men reacting poorly to rejection, or about women being afraid of rejecting men. This post is about women concealing the reason for rejecting certain men in some after-the-fact reason (i.e., "I'm not rejecting you because you're not attractive to me. I'm rejecting you because of your insecurities around the reason(s) that other women have rejected you for, but I'm only using that as a reason to hide the real reason, which is that you're not attractive enough for me").

Whoever correctly read and understood the post, you get a gold medal.