I mean yes, trans people are increasingly common, but you can't call less than 1% of the population "the norm". Being trans is fine and a beautiful diverse way of being, but it's not "normal" because "normal" refers to the majority experience. And being trans is not the majority experience. And that's OK! Being normal is overrated.

"The exception to the rule" is absolutely what being trans is. The vast majority of humans are cisgender. The vast majority of humans are either male or female. Implying that being trans (or for that matter intersex) is not "the exception" to the broad gender and sexual dimorphism that humanity evolved to have, is just denying reality. You don't have to deny reality to be accepted or be appreciated.

There are documentaries and reality TV shows about other types of identities - being gay for example or being autistic. Belonging to a culture or religion that is not the norm in Western society. It's not like trans people are unique in being treated this way. I'm participating in a documentary about synaesthesia soon because I have a unique way of seeing the world that very few others share. My fiance has dissociative identity disorder (something that isn't normal), and yet in many other ways he's "normal". We're all "normal" and "unique" in different ways. I'm sure in many ways most trans people are "normal" people, but being trans itself is not the norm. And it doesn't have to be! Society should get comfortable with people and diverse experiences that aren't of the norm.