I generally find myself siding with advocates for oppressed and marginalized groups. I think it is important that we challenge ourselves to set aside our prejudices and grant everyone the the political and cultural freedom to just be who they are. On the other hand there are times when I end up being really ticked off at advocacy that goes too far and this is one of those times. I have been down the rabbit hole of blog links and found a fat advocacy blog post that epitomized advocacy gone to madness. Essentially what is being said is that if you find yourself never attracted to a particular sort of person you are bigoted against them. The specific case surrounds never finding fat people attractive but a more general case is certainly implied.
If anyone can't see why this is wrong right up front let us use me as an example. I have never been attracted to a person I read as male. Therefore, according to this theory, I am bigoted against males. Hogwash and foolishness, obviously, and a classic example of people not being able to differentiate between prescriptive and descriptive. I describe myself as straight because being attracted to a man has never happened to me. This is extremely different from me saying that I must be straight because it is wrong for a man to be attracted to men; hell, I would much rather be bisexual / omnisexual / pansexual but describing myself as such would be inaccurate based on my history.
This is a tangled knot to sort out since we must carefully distinguish between the reprehensible "It's okay to be X, but I don't want to see it, hear it, or know about it", the unacceptable "Everybody has to be X", and the laudable "It's okay to be X but I am not X". It is all about your own personal bubble. You can do whatever you like inside your bubble but you need to respect that everyone else deserves that same freedom inside their bubble. It is hard to accept that people will do things you don't like especially when those things remind you of past suffering. Despite that challenge it is absolutely critical that we be clear about this: No matter your history, no matter your convictions, you get to tell other people how to treat you but you do not get to tell them who they are allowed to be.
Freedom of association (in particular freedom of who you find attractive) is like freedom of speech or freedom of religion. You may not like that somebody says nasty things, that people have a religion you disapprove of, or that they don't want to have fun naked times with you. But we all must accept that others having those freedoms secures our own and as such we must not try to take their freedoms away or someday soon someone will come for ours.