UBI in general is a bad idea. It's Keynesian theory at it's worst. Don't attack UBI with the "landlord" rhetoric. Attack UBI from a class standpoint.
UBI does nothing to address the power dynamics between the classes. The workers will still be entirely dependent on the capitalists for their necessities. Further, UBI potentially eliminates the one power that workers have over their capitalist overlords - their labor. UBI is pushed as a counter to combat automation and job-loss, and rhetoric around UBI may make people more comfortable with automation and feudalism. If you remove the capitalists need for workers and their labor, what incentive do the capitalists have for keeping UBI or any other social programs? Hell, what incentive do the capitalists have for even allowing the workers to live?
We need a worker led economy. Direct control of the production. Automation + UBI is a worst case scenario for workers and something we should be opposing at every opportunity. Neo-feudalism is the only future of UBI + automation. A society in which the rich control and dictate all matters of state and society, and whatever remains of the working class is left to collect whatever scraps the rich allow them to have.