Neil,
I mean no disrespect but there is nothing wrong with the teaching of natural selection and genetics and there is nothing that is particularly "left" about either. I believe in this case the problem is that the friend probably only has the very rough base of evolution as taught in a couple days during a basic biology course. One of those situations where you know just enough to make yourself think you know all you need to know. If you have a deeper understanding of genetics (like, say, as a profession) and have taken 7 or 8 college and graduate level courses on the finer points of evolution then you come to a greater understanding of the process that allows you understand why statements of "albinos are nature's way of culling bad genes... Darwinism says so." are not at all accurate.
Cheers