I'd like to see how that voluntary decentralized contractual community looks like, where land use isn't private. Where's this located? Is can I join? Georgism advocates land tax. How do members of the community earn to pay this tax? Do they have skills and trade?
I think different models of property can co-exist as long as they're all voluntary (in a communal level). If you want to enjoy absolute property rights you'll have to live isolated like a hermit
Absolute property rights are what people here are advocating for. If you think a different sort of community can exist you'd actually have to show me one.
Absolute property rights and absolute freedom of speech doesn't exist if you live in a community. The difference between a libertarian and a statist in this assumption is just how they negotiate these rights, libertarians negotiate in a voluntary contractual level and statist leave these decisions to the government bureaucrats