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To me signal doesn't account well for factors such as height. I do accept that psychological factors can influence height. It still seems a stretch to think that stronger pressure on male signaling that they are tall because of egalitarianism leads to taller males.
In a world with 1.80m female models a lot of woman also want to be taller than they are. I doubt that there psychological pressure on women to be small.
I think there's been a shift, with tall women being much more valued than they used to be some decades ago, but I've heard that tall teen-aged girls still get harassed for their height.
Anyone have more solid information?