Frankly, this means nothing without evidence.
Not disclosing it is setting herself possible harm. It's unfortunate, but true. I can link you cases of it.
It's a case of relative risk. Do you honestly think I can't link you to cases of trans women saying they are trans on a dating website, and having been attacked set-up dates?
If you really want to understand which behavior is riskier, go read up on it; actual stories by trans women. If you just want to justify your jerkish behavior, continue on.
What did she do wrong? She never disclosed she was trans and highly photoshop'd and manipulated her pictures.
I remember dating sites where people failed to disclose all sorts of things. One person I asked out was pretending to be her roommate for a couple of hours. Other people lie about their height, race, weight, etc. It's part and parcel of on-line dating (and of dating before there even was on-line dating). I never used it to justify acting like a jerk.
I'm sure you've come across other women who used altered pictures. Why was this one in particular worse than so many others?
Like it or not, but being into transgender people is a sexual preference that is different than being straight or gay.
You're casting a pretty wide net here. Nicole Maines doesn't look anything like Amy Schneider, and I've met cis women who resemble either of them.
If trans woman was a sexual orientation, you'd have people who primarily dated trans women. Do you know any?
I'm done discussing this with you.
Good. Less embarrassment for you.
I mean all this effort you're going through to justify being rude, when, with a little reflection, you could probably see why you could have been politer and not made someone feel bad. What's behind all that defense your playing?