Hitler was a great man? So too is Donald Trump, Elon Musk, and even Steve Huffman

IDK about Huffman, but the Voldemort analogy for the others is apt.

the one you seem to be using

The first one listed, yes.

a generalized term of approval” - again, this seems the opposite?

Isn’t English an awesomely terrible language?

would be “remarkable”, I agree, but I disagree that they would be considered “great”.

Was Ghengis Khan a great conquerer? Have we made America Great again yet?

Note, I’m not asking if Ghengis or the rest are beautiful, or good role models.

in this case may doom all mammalian life on earth to if not extinction then “great” curtailment of quality of life (as well as ability to live at all).

Again, sounds suspiciously close to the Voldemort agenda to me…