Red State's Erickson: 'Little moral difference' between incestuous and gay couples

With the writing so clearly on the wall, expect to see even mainstream voices like Erick Erickson say this kind of stuff with increasing frequency:

"If life comes down to who you love and who loves you back, if a father and son love each other so much they want to get married, there is little moral difference between two people of the same sex getting married who are not related and want to be and two people of the same sex who already are related becoming closer." [RedState]

If this is really...