It seems like you think that people can't be born with a sexual orientation that would be in some way negative or anti-social because that would undermine the idea that sexual orientation should be protected
This is the dictionary definition of 'sexual orientation': "a person's sexual identity in relation to the gender to which they are attracted; the fact of being heterosexual, homosexual, or bisexual." Nothing ideological. That is the definition. However, you do seem to believe that it is some sort of in-born tendency ( which I could argue is ideological). Why?I'm suggesting that paedophilia is not something you are born with, but something which develops.
If people were 'born with it' how might it manifest at age 4, 5, or 6 years of age, for example? It is often said that many nascent gay children often identify, or see themselves as the opposite sex when young. As children are not sexualised beings in the way that adults are, this is how their 'gayness' manifests.
It is possible to prove or show almost anything with science - and these days everything has to be shown to have some sort of biological or genetic cause. However, my feeling is that developmental and environmental issues are the biggest triggers most certain conditions and tendencies.
Trans activists are desperate to show, for example, some biological reason for their trans-ness, and there are plenty of vested interests keen to fund studies that show this to be the case. How would that explain, though, people who go on to desist and de-transition? If something is in-born, and inevitable, then desistance would not occur.