Honestly, this sounds like some chick that got abused or went through some trauma so the idea of having normal sex with a guy is extremely repulsive to her. Most trannies are obsessed with their own reaction to their own appearance, e.g., the feeling they get when they look in a mirror, but this seems to be all about sex acts and what repulses her.
"I can't risk anyone thinking that I'd let a guy use me like a girl." Sure, she's saying it makes her feel "dysphoric," but her wording indicates the idea of being a passive party in having hetero sex triggers some extreme panic in her. Kind of sad really.