Lighten up. It isn't a conspiracy to reaffirm your gender identity, it just that their website is THAT bad. I was buying a ticket for my wife the other day (female, btw) and couldn't figure out for the life of me why I kept getting an error saying her rapid rewards number doesn't match her name. I went round and round for about 15 minutes, retyping everything. Same generic error. Finally I took a random shot at removing her middle initial (which, by the way was automatically populated by the computer since she was one of my travelers on my account). Bam. Fixed.
I have probably bought 20 tickets for her over the years using the exact same process and this is the first time I have had this problem. Terrific.