> Those arguments can be incorrect without entailing all arguments from political necessity are false.
> I can incorrectly argue a justification of the flat earth theory from physics - but that would discredit my own intellect rather than the subject of physics.
Do you mean the right to (certain very specific form of) property is somehow an empirically shown fact like the geometry of the earth?
Am I right in guessing that you have inclination towards praxeology?
> I agree not everything has to be property, but some things must.
Why do some things must? Because it leads to more desirable consequences than other options, or because it is some metaphysical truth you're somehow privy to?
The first kind of argument is fine, the latter is just blunt rhetorics. I don't see why the former should be spoiled with the latter.