It's not really transphobic, if he said that about some heterosexual person it would have been passed off as a jab/joke but just because caitlyn happens to be Trans it's suddenly transphobic. Point is, people are insulted or have jokes said about them every day and no one cares or makes it an issue but as soon as someone does that to a homosexual or transgendered person your either homophobic or transphobic and people take it far too seriously.