Emil O W Kirkegaard

Why should that be the alternative? (Personally, I've never found this 'Cold winters theory' particularly compelling) But Lysenkoism isn't just about a theory of evolution, it is also political suppression/oppression of alternative theories

It occurs in animals too. https://emilkirkegaard.dk/en/?p=6472 

I haven't read enough into it to have a firm opinion about it. I'm generally less skeptical of genetic claims, but more skeptical of the evolutionary stories presented to purportedly explain it

That should make you skeptical the the genetic claims! They basically need to have evolutionary causes to be plausible but no believable evolutionary explanations or data exist

I'm skeptical of even claims about why skin color differs, but I'm not skeptical that genetic differences contribute to population differences in skin color. We have very strong evidence for that.

We have very strong evidence that selection occurred in specific genes with well understood biochemistry as well. Skin color isn’t really analogous to behavioral or cognitive traits in that respect

My point is that you can be utterly convinced that genetic differences contribute to a phenotypic difference without understanding the evolutionary story of that genetic differentiation.