No it's not. Read this; I don't want to explain it all again.
The state is a spook in that way, but when there are physical things that physically force you to do things, it is no longer a spook.
Stirner is about freeing your mind from things that can force you to do things. If you understand that killing a person will make you go to prison and then decide not to do it because of that, then it is not a spook. Likewise if you don't want to kill a person because it is messy, exhausting or you have no reason to and don't want to, then it is not a spook. That is your choice and it is not an idea telling you not to do it.
>Just observe the nation that is defended by devoted patriots. The patriots fall in bloody battle or in the fight with hunger and want; what does the nation care for that?
>By the manure of their corpses the nation comes to "its bloom"! The individuals have died "for the great cause of the nation," and the nation sends some words of thanks after them and – has the profit of it. I call that a paying kind of egoism.
Of course what you describe is less extreme than dying for your nation. What really is a "sense of belonging" though? You feel happy and at ease where you are? You feel you are a part of something?
These are all things in your own head, why should you have to pay someone for it?
The spook here is actually not having a sense of belonging. Since a person feels they don't belong they will do things to feel better. It is all in their head. If you want to feel that you belong, then just do it. What good is it really to help people your country? Does it actually make a difference? Why not support the other countries? It will do you just as good. If you support all countries or none, it's really the same thing. So why bother at all?
There is also one fundamental misunderstanding everyone seems to have: People think Stirner and people who think like him are sociopaths; they're not.
You can have friends and be nice to them, but it should be because you actually like them and you want them to like you. If you are only supporting a friend because of the notion that that's what friends should do, then it is a spook, but if you support a friend because you like them and you really want to help them, then that's just a choice.
A country is not a friend though. It's not anything more than a piece of land.