Every natural trait and instinct has an evolutionary purpose. In evolution there are also disorders and mutations. Homosexuality is a disorder because it prevents an organism from reproducing.
I guess that's a no, then. Maybe you should notice how often you seem to be making statements you need to retract.
Also that's not what "disorder" means, but it's not like I'm surprised you don't know something.
(I could start listing sexually reproducing species where individual organisms explicitly take non-reproductive roles as part of the standard functioning of the species, but let's be honest, you're gonna say something uninformed and refuse to learn anything in response)
So instead here's a fun question, is the Christian norm of waiting until marriage to have sex a disorder? It also prevents organisms from reproducing.
I know that getting rid of fetishes is impossible, but I heard about people with fetishes who were still able to have children, indicating that they had both the fetish, and were able to have normal sex.
Well, that's a blatantly wrong assumption. Non-"normal" sex can also result in kids.
It seems like while getting rid of fetishes is impossible, but treating them so that you can have normal sex is. It is a major problem that I am so sexually attracted to a woman in jeans that I fail to be attracted to her naked body.
If you're not attracted to women, that's not because you're attracted to jeans. You can in fact be attracted to multiple different things simultaneously (I'm attracted to both men and women, for example).
Your problem is either you're not attracted to women at all (i.e. you're gay or ace), or you don't know how to identify sexual attraction outside your fetish. The first is perfectly ok and there's really not much you can do about it, so I'd suggest learning to accept it. If it's the second, well. You should probably look for more varied porn.