Only in those states which allows it. Remember the only part of the law that was struck down was the provision denying federal benefits.
It does not require other states to recognize the union.
Yes...bu IN THOSE states it changes the definition of marriage by putting gay marriage on equal with the the norm, male and female.
I question then... doesn’t that cause us all to recognize those marriages as equal (thereby changing the definition of marriage)....because they will receive “federal” benefits rights..