What I think is true amongst Europeans is the belief that men with receding chins are wimpy and unattractive. That belief may be strictly European and not applicable to other races or ethnic groups.
Because Mongolids, though infantilised and with facial flatness, have a more similar background, its true for them as well.
They are just less masculine on average, but their differences are "visible" too.
In fact unattractive is one thing, but everything else is rather a cliche even if there might be something behind it. Lets say it that way, men with the athletic constitutional type and strong masculine sexual type which is the usual combination, have just stronger chins on average in all progressive types.
But its typical for the American view on things that they prefer more brutal and extreme looking types, especially from the beginning of the pop culture.
You must just compare the stars of the 20's, 30's and 40's with those from the last decades...
The rather aristocratic type lost appeal, so its something cultural behind it too and an implication. What do you prefer, people acting first and thinking later, being more average and brutal or something else? Things are clear in the American pop culture of course.
Therefore being less masculine is not always bad, in fact the medium types have the best results if its about being versatile.
Otherwise extreme Negrids would have more success, because its not by chance that the rather mixed or less masculine males and females of the Negrid type have more chances "to make it" in the modern society with the exception of sports.
I read different things about that issue, but just some thoughts, maybe others can explain it better of have more data to speak about it.
In general I see two reasons for a stronger chin in Europids than in paedomorphic or archemorphic races.
First is sexual selection, maybe the more important, 2nd might be a "structural reason" because the strong orthognathy and reduced teeth area had to be "redesigned".
But ok, I'm not really an expert on the that subject, so comments are welcomed.
First there are two reasons for a small, negative (receding) chin.
First reason is archemorphy = primitive morphology like you can find it in Australids in extreme, but are most features in Negrids as well.
There seems to be a different and not as developed evolution in general, especially if its about sexual selection.
The bones of the skull are quite strong and prognathy is obvious.
The 2nd reason for a small chin (but usually not fully receding) is Paedomorphy, like it is common in most Mongolids.
Its basically good explained by what I have written about Paedomorphy vs. Progressive races.
Such types are not as sexually selected (especially males), are less masculine and more reduced.
Europeans on the other hand seem to be quite strongly selected for sexual advantageous features, are more masculine than most Mongolids (maybe with the exception of Nordsinids).
If you "woud push the prognathous" underface back, it would look strange and weak, especially if the nose would still stood out. ("Vogelprofil" ~ "profile like a bird" - typical for very Asthenic Europids)
This looks somewhat odd, and not very masculine. So the relocated underface and bone reduction which occurs in progressive races in general (even in all mammals) had to be balanced, by a still "masculine-strong-looking-feature" which combined "new"-neomorphic features with strong-masculine ones.
Furthermore because of the general reduction of underface, teeth and mandibles, the whole underface bone structure was weaker.
I'm not sure about that, but some said that a "stronger and thicker" point - chin could be an adaption to make the weaker bones more stable, stronger - like a bumper. ^^ (a theory I read with others)
But what we know is that strong jaws+chin is a masculine signal, and therefore if there is strong sexual selection + advantage of neotonic - general progressive and orthognatic individuals, we can assume that a strong chin-jaw as a signal of strength. Especially for orthognatic individuals (males) this could have been very advantageous.
If you look at old and very robust races/species like the Homo neanderthalensis - he had no chin.
Of course for him both would be true - needed no bumper because his jaw was very strong and masculine features were in general quite strong.