> You can be transphobic by omission.
I don't agree. Any definition from a reputable source on the term "transphobic" implies or directly states that transphobia is, specifically, a fear or dislike towards trans people. Not researching what transgender means or what a survey should include for genders in the year 2017 may be stupid or ignorant but I just don't see how it meets the bar for being "transphobic", especially when the person who is making the error of omission has no problem with trans people!
As an LGBT person I really think that people need to stop inferring malice where there is none. Not only does it not accomplish anything, it simply aggravates people who would otherwise be friends and allies and creates further divisions. If I pointed out every single time a friend or family member accidentally misgendered someone or said something that I thought was not 100% PC, I would be spending a lot of time alone.