There’s a difference between being attracted to certain types of people and fetishizing them. You can’t force someone to be attracted to everyone, and if they aren’t attracted to women that found out later in life that doesn’t make them a bigot (although the person mentioned here definitely is for their other comments).

I don’t think you’re overreacting. Everyone is entitled to their own tastes and it’s fine to be more attracted to cisgender people, but the way that is phrased she has much bigger issues with trans people than just wanting to date one or not.