Men can be witches. Trans persons can be witches. Nonbinary persons can be witches. Genderfluid persons can be witches. Agender persons can be witches.
Gender has zero influence on a person’s witch-hood.
And terfs can suck it.
If you’d like a fucking citation go read Compendium Maleficarum, written in 1608, which has an ENTIRE SECTION ON TRANS PEOPLE. Not to mention plenty of content about male witches.