Every person who speaks or writes for the public will make an occasional faux pas, and sooner or later will write or say something inappropriate.
That said, I have come to believe that the more committed one is to leftism, the more likely one is to become meaner.
Society may no longer define marriage in the only way marriage has ever been defined in the annals of recorded history. Many societies allowed polygamy, many allowed child marriages, some allowed marriage within families; but none, in thousands of years, defined marriage as the union of people of the same sex.
The evidence in this universe for design - or, if you will, the fine-tuning that cannot be explained by chance or by 'enough time' - is so compelling that the only way around it is to suggest that our universe is only one of an infinite number of universes.