yes true. property, especially real estate, is a legal construct created by the state. In older eras this was more explicit, property existed “at the pleasure of the Queen” or whatever. Now we rely on a nebulous social consensus reinforced by the courts and legislature.
Money is only a token within this game - it has no reality other than the rules. The rules are whatever society decides they are. There is not a “real” ownership that the rules are interfering with.
But that's true for any rights. The right to feel safe, the right to safety and not be harmed, raped or killed. Without society, sure, real-estate, personal safety are out the window and we could expect expropriation, rape and death.
You have "Castle doctrine" because it was deemed politically beneficial to a politician at some point. That same politician that would happily turn your neighborhood into a strip mall through eminent domain if that was beneficial for them. You have banks literally foreclosing on the wrong homes, or through simple errors, making people homeless in the process, and those same politicians are "so sad".
If you're in a Western nation and you "make" money, it is very much a partnership with the state, and your ability to "make" money would very likely disappear without the state. For someone to go on about "their" money has no correlation with actual reality, and I'd encourage them to ply their trade in Somalia. I'm sure the income tax rates are great.
Money is only a token within this game - it has no reality other than the rules. The rules are whatever society decides they are. There is not a “real” ownership that the rules are interfering with.