I don't agree that assortive mating could do what you suggest as quickly as you're suggesting -- evolution is slower than that. But I agree with the general idea that meritocracy has caused a brain drain from the lower classes, and also that the ruling class is quite clever.

As far as transferring 50% of the middle class's wealth upward without a peep -- this has primarily been accomplished through the "culture war." People will vote against their economic interests if it means voting in favor of their cultural biases.

Is a bit like saying not to study mathematics because you actually need calculus.

I was not suggesting to not study evolutionary biology (we should just call it biology as there is no such thing as non-evolutionary biology), just explaining what is the area you need to study if you want to understand the question being discussed.

https://www.google.co.uk/search?q=population+genetics+bsc

oh no it isn't

As a unit it often is called something else to appeal more to students and is more often mixed in with other biology fields. This is a general trend across biology where areas that were once separate fields have come back together with the rise of molecular biology.

...

As a unit it often is called something else to appeal more to students and is more often mixed in with other biology fields.

Which is it?

The problem with teaching population genetics is not that it is not important or interesting, but that it involves maths. Biology students and maths are a bit like oil and water.