Wow, you are so good at juggling those goal posts, you should join the circus.
I have proven that homosexuallity is a fetish because it only provides self pleasure and does not provide a family. Your only argument that it is not a fetish is that if forms early and seems to be permanent, neither of which make it not a sexual fetish.
No, you very much haven't. You are redefining terms to suit yourself. You don't know what a fetish is. Also, you've presented no evidence (read: studies) for any of your statements, nor any logic other than repeated insistence.
If pedophilia is permanent and immutable, would you claim that it is not a fetish and deserves the same respect as homosexuality? What argument do you have that would make pedophilia any different?
So first, it doesn't matter if pedophilia is an orientation. Almost all expressions of it is inherently nonconsensual (age play with adults only can be consensual, as are drawn pictures not based on a real person), that's the problem with it. It's not morally wrong because it's disgusting, it's not morally wrong because its a fetish, it's morally wrong because of the lack of consent being inherent. So even if someone insists its an orientation, you can still agree to disagree, then resume calling any expression of it morally abhorrent.
As for it being a fetish vs an orientation, this is a false dilemma. There are other ways to be sexually screwed up or different besides fetishes and orientations. Pedophilia is one of these, but there certainly are others, almost all more benign.
It’s not a popular opinion but she isn’t the same like a blood sibling is. You may love her you may have grown up with her, but adopted siblings and step siblings aren’t real. Your relationship with them is based on outside sources as opposed to intrinsic nature. For example if your adopted sister had a brother that your family did not adopt would he be your brother? If someone is your sibling then their siblings should be your siblings right? It only gets complicated with half siblings. However he would still be her brother even if they don’t grow up together or have a sibling relationship it would be wrong for them to have a romantic relationship, because they are siblings.
Here's where'd I'd draw the line: My sister's blood siblings, if she had any, wouldn't be her actual siblings. They didn't grow up with her. But let's say they did for a time. Then we'd just have a non-transitive family (the transitive property states if x=y and y=z, then x=z, for various purposes of =. In this case, we'll let = mean 'in the same family'). But this reflects the real world. For example, if you consider first cousins to be family with you, that doesn't mean your first cousin's first cousin needs to be family to you. Family is ultimately a measure of nearness, and nearness is inherently not transitive.