So what's a better rule that ensures those with wealth pay their fair share of taxes? All tax rules are unfair and distortionary and inefficient etc. You have to pick the least bad.

Land value tax is progressive, efficient and non-distortionary.

No it isn't. It's one of the best taxes, but it's still distortionary. It's also unfair, because it's incredibly easy to avoid. And it's also not sufficient.