One person has to start the expansion though, it just doesn't manifest on its own.
Sure, and like I already said, the others should be onboard with you. If however, like I did, push back against it and provide the reason for the push back, then it's bad form to keep pushing. You haven't even addressed the reason for the push back.
One person's forcing is just another person's expanding, and shouldn't be responded to rudely.
The first time is not forcing. Continually pushing and pushing is forcing.
So the content I got from your replies is basically a person is only allowed to respond exactly to what was said, cannot leverage from that and expand on it like any other normal conversation between people, cannot be helpful if the other person is not in need of it, and if they do so they're just plain 'wrong' for doing so.
Not anywhere near what I said. I said it doesn't make me feel better, and yet you persisted. That's not good behavior.
If you want to talk with someone rather than at them, then yes, you have to accept and adapt to what the other parties are telling either directly, through their actions, or even in hints. I'm telling you directly and that doesn't seem to work.
You prefer to talk at me rather than with me where only your desires and intentions matter. I don't see why you bother talking with anyone if that's what you do, because a wall is just as good as a conversation partner as one you don't listen to.
You must be really fun at parties.
Yes actually. For one, I don't force the conversations after someone lets me know they're not interested in it. Tends to put people at ease when they feel that their boundaries are respected.