Politics is the art of the possible, not the art of the daydream.
Exactly, a presidential candidate leading a political party devoted to protecting marriage, can change things.
Pretending to have a daydream political position of ending legal marriage, is a cynical and fake, daydream, a way for a crook to escape fighting for marriage.
A dishonest presidential candidate (or freeper), refusing to even discuss outlawing gay marriage in immigration and the military, but thinking of something as goofy as ending marriage in America, by claiming that the voters will suddenly vote to just end all marriage laws and legal definitions is using fantasy to fight for gay marriage.