Considering we used a monumental wealth of nazi research, and the existence of operation paper clip. https://www.bbc.com/future/article/20190723-the-ethics-of-us...
Even though you’re correct that Nazi rhetoric impacted creating permissive tobacco policies. https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2736555/
To clarify, I think it’s because it’s an extreme example, that while technically perhaps accurate, misses that it’s a hard one for a reader to relate to effectively and misses a subtext of: shouldn’t any research from that source (of which what are the ethics of using it as well?) especially in a lens of 1940/1950, be subjected to extreme skepticism? Where additional replication may not be practical or possible.
Under a more rational angle, any promising results obtained by an enemy should be double- and triple-reproduced, because an enemy may be planting disinformation into it. But this is a bit more serious than somebody you don't like making a comment you would rather have made yourself, and you already agree with the point because you would make it yourself and are now in a bind. That's the kind of uncomfortable situation I initially referred to.