Uh NO! That would be YOU and the great Mr. Lincoln's theory!
It is YOUR side spouting the idea that states who wish to leave of their own free will cannot do so and should be made to stay against their will by whatever means are necessary including armed force and despite the fact that their is NOT A WORD in the law compelling them to stay!!
That idea is perfectly analogous to your wife deciding she is going to leave you but being denied the ability to do so because you are literally holding a gun on her to make her stay!
You say that because you're thick as a brick. In your world a state is free to walk out without discussion, without agreement, for any reason or no reason at all. And the other states have no choice but to accept that regardless of the impact it has on their well-being. National debt? Too bad, so sad, that's the responsibility of the remaining states to deal with as best that they can without any help from the leaving state. Treaty obligations? Sorry, that's the responsibility of the remaining states to deal with as best they can regardless of the hardships. Federal property? Tough, the leaving states can take all that they can get their hands on regardless of the fact that it was purchased with revenue provided by all the states, those leaving and those staying. Economic disaster by having access to the sea cut off? Tough titties, remaining states. The leaving states have the right to do all that, and the remaining states have no choice but to sit back and take it. So all that makes your claim that "No state is more sovereign than any other state so no state or group of states can tell ANY other state or group of states what it can or cannot do!" so much BS. In your world some states are more sovereign than others, you just proved it by claiming that states have the right to take all those actions and make the remaining states suffer without being able to do anything about it. All they have to do is walk out.
You are, as I've pointed out before, a walking, talking mass of contradictions. In your world no state is more sovereign than another, except when they are. The federal government should not tell a state what to do, except when you think they should. You believe in states rights, except when you don't. You are all over the board saying one thing at one time and the exact opposite at another time and you don't see they hypocrisy and the nonsense in it. That's what makes dealing with people like you and Lentulusgracchus so much fun. You guys can say the darnedest things without realizing how moronic they make you appear.