Not necessarily. If you believe that the disadvantages of coming out would outweigh the advantages, you'd stay in the closet. Society would still be wrong, but you'd do what you feel is necessary.
Yes. I haven't said anything to the contrary. (By the way, why does this need have to be "abject"?)
The point I'm making is that society is imposing on us. We're not imposing on them. Hence, we have no need to apologize to anybody by saying, "I don't want to impose on others," or "I don't want to force my lifestyle on others."
We'll often have to accept what they impose on us, but that doesn't mean we have to apologize to them.
I haven't suggested that you should do otherwise. I don't know why people keep insisting that I have.