I think this is an incredibly unfair and callous assessment of what's going on with catastrophic health care coverage. It's not about "the relatively small number of people who would be better off under the existing system." It's about the relatively small number people who are alive under the existing system who would be dead under the proposed one.
For example, I can make the same kind of argument in the opposite direction: if UBI creates a disincentive within inner cities for fewer kids to become drug dealers, which creates less opportunities for violence, leading to significantly less deaths in the inner city, I think that you are making "an incredibly unfair and callous assessment" as well.
Saying that any plan that transfers risk from the current state to a different state that is potentially net better for all is to miss the point that we've already chosen a system that disadvantages SOMEONE... and to change it will probably disadvantage someone different.
I am all for UBI, but like another poster said I don't think it works without universal health care if you get rid of all the other current transfer payments. It seems the author of the article agrees, but I don't see how the 3K for insurance makes the numbers add up.
People hate having to make that choice. Hate it. But that doesn't make it go away. We could make cars safer in well-known obvious ways, but they would be more expensive and use more fuel. Many, many, many lives would be saved if we immediately stopped burning coal, but electricity would be more expensive, and then maybe some people would freeze to death because they can't afford heat, or because they became unemployed and lost medical coverage. And in some cases we may even be getting it wrong, but that doesn't get you out of having to make a hard decision.
But.
There is no part of the proposal that covers making sure coverage is equal in value to Medicare - in a private market I'm betting benefits start getting cut post-haste. UBI without universal healthcare is a nightmare, and is all but privatizing Medicare. Surprise!
Also, since children under 18 don't get UBI, they would have to be covered by their parents' $3k/annual buy. But again, privatized "universal" healthcare? No thanks.
The easy way to do this is to give people a one-time election between social security and the basic income, so that nobody can object that they're not better off. Anybody who isn't at or close to retirement will choose the basic income because it begins paying immediately, the lifetime payments are higher and they wouldn't have to pay social security tax anymore. Then in 20 years or so there would be no one left on social security and it could be discontinued.
> Similar problems with Medicaid, it's worth a lot more than $3,000 to the people that are getting it (mostly because children).
It seems like your argument is that we can't do it because there are a relatively small number of people who would be better off under the existing system. But by that logic we could never change anything, even if the net benefits are very large, as long as there is anyone who is better off under the status quo.