I keep seeing that "rights are not pie" statement.
This comes straight out of people not really having a clue about the concept of rights, what they are meant to represent or how they are supposed to work, or how they are mediated in the law. Many people take it as an article of faith, and a guiding principle in how they think about social justice, that if everyone was afforded full expression their rights, all the time, they would never conflict, and they would balance just like the forces of the universe are balanced. It in a level of faith that no major organised religion subscribes to, as they are all observant enough to recognise that although that seems logical if you believe in good and evil, it is evidently untrue.
I think the business of so many thinking that trans ideology is scientifically supported is huge as well. Many many regular people are completely convinced of this. And no wonder, all the pop science magazines, the well respected ones, have written about it, the medical establishment seems to support it. People have been very influenced by magazines like National Geographic publishing whole issues about the science telling us that sex is not binary, that intersex conditions somehow tell us this.
There is a real need for those in the sciences to speak up about this because the vast majority of regular people are just going by what they seem to be hearing from sources they believe are reliable.