The dismissal of a sexually selected trait just because it usually is far more pronounced in one sex than the other seems extemely premature to me.
I would argue chins are actually already quite different between the sexes - to the point where people will have surgery to change their appearance if their chin doesn’t conform to societal ideals.
Sexually selected trait seems like an avenue of research that shouldn’t be so easily dismissed.
The real problem I see all the time is people keep cutting this story short, the rest goes:
Workers: oh fuck no, I’m out, see ya.
Capital: wait, not like that. Please. What do you want? We can talk. Please … please come back.
Weird to me that last bit gets left off, especially in subs like Socialism and Work Reform.
Don’t forget how the story ends.