to be fair, a lot of people are stuck in jobs that don't give them the benefits they want, don't pay them enough, or just don't suit them very well but they can't quit and get a new job because they aren't paid enough for that. UBI gives people a chance to quit and not immediately be on the streets. This also creates more competition for employers to win over employees instead of creating wage-slaves. I doubt that's what everybody who quit here did, but it is part of the idea of UBI.
Yea the basic income in the study seems to be means tested so it might incentivize people to quit.
Just want to point out that a universal income would be constant regardless of job held, so there's no incentive to quit. If the UBI amount is tuned correctly, then those who don't have a job can subsist long enough to find a better job, which I'd posit is a net boon for our economy.
