I like how if you don't support something (specifically if you don't support the government mandating something), that make you -phobic (afraid) of it.
Don't like scientific facts? You must be truthophobic! :^)
Wellllll, it's more about perspective.
People are people. We just categorize them because our brains suck and putting people in boxes helps us not overload with data. Making a situation black and white is our compression method to be able to handle stuff. We understand in pieces, bit by bit, not entire foreign concepts at first blush.
This has the side-effect of creating assumptions and horribly misjudging people based on how our brain categorized them. Racism, sexism, most things like this are due to the brain wanting to save processing cycles. We have to force it to work harder to comprehend the acceptability of us and people who are not us.
In this case, we're talking about saying "hey, people who are like this? They're people too, and are no different than other people. This is just how some folks do things. So don't assume junk!". To be against that indicates that you disagree with that assessment. To disagree with that assessment would indicate that you have a problem with seeing them as people. Thus the "what is WRONG with you" when you say you disagree with it.
Also, obviously, the hate, anger, violence, incorrect statements, etc, are indeed -phobic, as they come from a place of fear of "the other", of someone "different".