It's like saying 'well, he's a white supremacist, but he has pretty good views on economic policy!' - if those issues are important to you (and they probably should be!) it's not reasonable to overlook them. You have to draw a line somewhere, even if you are occasionally willing to ally with people you disagree with to achieve a common goal.
He simply does not qualify as a 'sane' republican. The lesser of all evils and all that, sure, but when both candidates are absolute monsters you really shouldn't fund either of them (even if, given no other option, you vote for one)
It's like saying 'well, he's a white supremacist, but he has pretty good views on economic policy!' - if those issues are important to you (and they probably should be!) it's not reasonable to overlook them. You have to draw a line somewhere, even if you are occasionally willing to ally with people you disagree with to achieve a common goal.