1. 'evolutionary pressure on traits' -> so what? It's important, because we are usually much better powered at detecting purifying selection in traits.
2. As for the slanted eyes: why do you think there was no pressure? Assortative mating is a thing.. it's very prevalent in visible traits and really makes this hard.
3. Preference for height... umm ok - this is weird. There are plenty of known examples for purifying height selection in either direction. However, these are rare variants and not the major driver of height variation within bigger populations. Height is actually a good example for looking at variation within populations: https://elifesciences.org/articles/39702 Basically it says that population stratification is a major problem for things that are easily measurable like height (unlike intelligence, which is much harder to measure and way more likely to have known social covariates).
4. In general, you aren't even understanding the simplified responses that the authors are trying to explain, but also can't seem to grasp there might be more that you are not understanding – and just ascribe things to lack of imagination or political correctness of the authors.. who are world class geneticists. You can lead a camel to water...