Well, I suppose so? I mean, I think that being prejudiced against / cissexist towards / bigoted against - and I use these interchangeably - transgender people is the norm in modern American society. To me, saying "almost all cisgender people have cissexist attitudes towards transgender people in 2015 in America" is like saying, "almost every white person had racist attitudes against black people in the U.S. in 1960, and a large plurality (or majority if you go by some surveys) still do." If someone is racist, it doesn't mean that they are A Super Bad Person Now And Forever With No Redeeming Values, after all. They probably have lots of redeeming values, and pet dogs and save stray cats and let their neighbors borrow butter and whatever else you might use to define someone having basic decency. But they're still racist, and (at least my by lights), I think someone who is cissexist is still so.
I also don't think that trans people and cis people are identical. I haven't been making that argument; there are obviously differences. People have talked about some of those differences that would be perfectly good reasons for not being interested in a relationship with a trans person - like wanting to have biological children, for instance. And while I do think that it is reflective of learned cissexist, if you don't actually feel attracted to someone I'm not saying you should force yourself to. I'm saying that if there were someone you were attracted to and knowing that they were transgender made all the difference for you (and not something else), you should examine why that is. I might be giving the wrong impression but this isn't something that happened overnight for me. I spent a lot of these topics, for years, feeling sort of sympathetic to comments like the ones you were quoted as making, at least on some level. And it was that idea that transgender people's genders are somehow, in some way, less authentic. As for me: It's a recent thing for me. It's taken me years to slowly change my attitudes from the bare minimum of progressiveness to being more truly supportive. If someone does change their attitudes, it's not going to come because I've exhorted them to be attracted to someone they aren't, but because of a change in their perceptions vis-a-vis cisgender people and transgender people.
Perhaps the word "bigot" is too inflammatory for your tastes, but I don't want the people I'm disagreeing with to feel ashamed, but to think. My hope is that, whether someone agrees or disagrees with particular claims I've made, that they at least think about their thinking, that they consider what their fundamental, unspoken assumptions are. If being challenged on that makes someone feel as though they've been attacked, as milquetoast as I've been, I think it says more about the general tendency towards defensiveness than my being particularly intemperate.
I should also say that I think that this discussion for most cis people is going to remain in the realm of the abstract. What care I if you never feel attracted to The Hypothetical Trans Woman? Honestly, not much. And I don't expect you to find yourself in a position where you'd have to "force yourself" to be attracted, nor is that what I've been suggesting.
