The fuel of capitalism is a large population of consumers. To be extent that we have inequality and we have lots of people that are unable to make economic choices due to poverty, we limit the growth of the economy.
My understanding is that UBI experiments show that is not the case. UBI is a safety net, and does not lead to a significant drop in labor. With the pending waves of AI and automation impacting labor we'd be well-served to continue to explore how to make it work.
https://www.nber.org/system/files/working_papers/w32719/w327...
But a UBI funded through an LVT is much better than that. An LVT is a non-distortionary tax. This means that increasing the tax does not change behavior. But it is not only non-distortionary, it also reduces the ability to speculate as land tax rises. This causes the LVT to be a net-good tax, in much the same way that not taxing carbon is a subsidy to those who burn carbon. The lack of an LVT is a subsidy to the owner of the land. Ending rent-seeking will thus cause the economy to grow. This would result in deflation, and so the UBI is necessary to bring us back to our inflationary target.
The article shows a good example where this will have a massive impact to the economy, even if it is not true in most of the world. That place is South Korea, where roughly 50% of the population lives in the Seoul Capital Area, which continues to grow every year. This has caused significant economic damage, as young people are unable to afford to have both families and a place to live in Seoul, but they must live there in order to have a job. They can simply not afford to live outside of Seoul, where housing is less, but wages are much less.
If they were to enact an LVT with a UBI(or as Georgists call it, Citizen's Dividend) then the population of Seoul that would prefer to move out into cities and towns throughout SK would finally be able to afford to do so. They would only need to be able to find a job that allowed them to live a lifestyle that they preferred.
That's what great about a policy that does not advocate for any particular out-come, but about reaching equilibrium economic states. For places that have to low density, it incentivizes density. For places that have to high density, it incentives spreading.