At the very least, it would be great if politicians implemented it as tax neutral and as originally designed: the ONLY tax, and including renters. Some jurisdictions are doing it that way.
It’s unclear to me what problem it seeks to solve. Market value changes for every asset, not just land, and unearned wealth creation is common. Should all software engineers return the 50% of their salary that market forces caused to increase and give it to typists?
I will probably believe it more when the proponents act on their recommendations, say, if Lars sells his house and sends the 50% appreciation he says in his blog he didn’t earn, as a gift to the Federal Government so that Trump can hire a few more ICE agents.
My concern is also aligned with Orwell in Notes on Nationalism: “One has to belong to the intelligentsia to believe things like that: no ordinary man could be such a fool.”