Moralistic fallacy - Wikipedia

The moralistic fallacy is the informal fallacy of assuming that an aspect of nature which has socially unpleasant consequences cannot exist. Its typical form is "if X were true, then Z would happen! Thus, X is false", where Z is a morally, socially or politically undesirable thing. What should be moral is assumed a priori to also be naturally occurring. The moralistic fallacy is sometimes presente

[enemyoffreedom]

道徳主義的誤謬。自然主義的誤謬の逆(あるいは派生)の「Aは倫理的、道徳的だから自然もAであるはず（べき）」 / 社会生物学論争とかが典型か