Say I were to tell you "I have a large treasure chest full of gold doubloons" and you were to say "Really, let me see it?", so we went to my house to look at my chest.
We enter my living room, where there is a fireplace with a mantel. I say "Look, it's right on top of the mantel", but there are only picture frames.
You approach the fireplace confused. "Where is it?" you finally ask.
"Don't you see, right here." I say, walking towards the fireplace and picking up one of the picture frames atop the mantel.
"Isn't it beautiful, my chest full of gold?" I say, handing the picture to you.
You look at... (read more)
How would they have to act for this to happen?
If someone suggested the idea of reducing your recline by 50% politely, would you really, in actual lived life, reply making a protest of your "rights"?
I implore you to really think of what this would be like in real life. Someone nicely asking for this. It's a long flight.
Also, to consider the views of other people here and the positive effects of your signaling is speculative at best. You don't know how people will perceive you. Sure, you think you are standing up for what is obviously you right. You have no way to verify this is what other's believe though.
That just seems like something rather shaky to consider a positive externality. Alternatively, you could maybe make the case that there is always value to protecting your rights, a la MLK's famous "Injustice anywhere is a threat to justice everywhere", and I would salute your courage to die on that hill, as you surely would die.