We’ve turned into a Hive, things are getting serious.

The problem lies in height, which leads to problems in the head. So, most likely, things will improve in the head after an increase in height. And the chances will definitely increase, possibly even several times over. At best, a psychotherapist would teach him to accept and tolerate the fact that he is short. At worst, he would advise him to find a girlfriend with a face that resembles his son's.

Oh, come on. There are many short men for whom height doesn't prevent them from attracting partners and living quite happily. Some are even so bold that you can envy their courage and audacity. So, the problem is not so much in height as in the head: in how a person perceives himself, in what environment he grew up, how he behaves in society, and so on.

Added 3 minutes later
To be fair, a very tall girl can also fall into this kind of trap, who, due to stereotypes, will only look at guys taller than 190, among whom she won't find a suitable one, and will ignore normal guys around 170-180. And then a stereotype will form: "all men are jerks," although in reality, she saw jerks in that narrow sample that she herself set. Here, too, you need to treat the head.