Why would anyone have a problem with someone who is a crossdresser/ is transgendered?

The reason I ask is because that just seems so hypocritical to me. They’re not bothering anyone or being offensive if they for instance are eating at a restaurant or out at a movie theater. So what if you know the guy is dressing up as a woman!I found out my dad is one and strangely enough I already knew that he was going to tell me. So would you have a problem with someone who is a crossdresser and go up to them ina restaurant/make comments about it within earshot. That happened when we went out to the Olive Garden. Were all born a certain way and we are different.