I'll grant you that they're all taboo, but they're not really useful, either. (I mean, some people claim these are true to justify their prejudices, but that's not what we're talking about.) In particular, the statement about Hitler is too vague to suggest what ought to be imitated, and the statement about racial groups focuses on an effect which is almost entirely obscured by historical facts about the distribution of resources.

That said, regarding eugenics: have you read any of David Brin's Uplift books?