The devil is in the details. If you think the current welfare programs will just disappear with the advent of a UBI, you are naive. “But the kids need a good school breakfast, lunch, and dinner!” etc.
“If you think the current welfare programs will just disappear with the advent of a UBI, you are naive.”
Therein lies the rub.
How do you convince the left to surrender all the other programs for UBI? And there are HUNDREDs of programs.