To try and be charitable to the poster, I think a better example would be "Would you be okay burning witches if they really did curse people?" than the Nazi example.

I think another way of saying phrasing the same idea. Let us assume that Muslims are intentionally having as many kids as they can to become a demographic majority in the future. How does that affect how we should act?

The above phrasing I count as very different from defending rhetoric of a genocide perpetrator because the answer to the above question is not "Kill all Muslims".