"..self-defense is not an initiation of force"
Reminds me of the old ploy: "I hit him back first."
"A trespasser has initiated the use of force by trespassing. "
I deny signing by any means any kind of contract or agreement with those blanket terms, therefore I am not obligated to accept those blanket terms.
By what I understand to be your standards, I don't see how you can disagree with that unless you try to prove I did sign up which I'm sure you'll try.
There's nothing contractual about it, son. You're on my land. You have no right to be on my land (you may recall me mentioning that already). You received the privilege from me, but I've revoked it. You're now a trespasser. Per the original contract, if you comply with my demand to leave, I must give you enough time to get off my land, but that's the full extent of my obligation. If you refuse my demand, I have the right to eject you because you're on my land without permission.
You don't accept that (1) property rights are absolute, (2) only voluntary agreements can waive or alter property rights and (3) contracts entered under duress are invalid. If you accepted those facts fully, your thinking would not be so muddy in addressing examples like these.
By what I understand to be your standards, I don't see how you can disagree with that unless you try to prove I did sign up which I'm sure you'll try.
By coming on my land with my permission, we entered a contract. The terms bound me not to assault you, and to let you leave; the terms bound you to abide by the house rules--where, naturally, unusual rules need to be stipulated in advance. I can withdraw the privilege of being on my property more or less at will, but I must allow you to leave in that case. If you breach the contract, then you have lost the privilege of being on my land, and are now a trespasser.
You can't claim you made no agreement, since you actually walked onto my land. If you didn't wish to accept the contract, you refrain from walking onto my land.
Your muddy thinking is what confuses "entering my property" with "failing to flee the country". One is a voluntary action on your part; the other is an ultimatum on my part.