Maybe, but I think the fact that they could be planned for / assumed would mean the benefit would have a high risk of quickly disappearing into inflation and rent-seeking.

In the case of rent in particular, there would be no reason for any landlord to take less than $UBI if there was a guaranteed monthly payment from the government.

Unexpected or unpredictable cash influx almost always makes things better because people know they can’t “count on it” and they use it for savings or to fix problems they had been unable to fix, rather than “live off it.”

To put that differently: what most people really need is margin to handle the unexpected problems in life. But living below your means to create margin is hard, even for high-income people! Doubly hard when you are low income. So unexpected cash is more beneficial than expected cash, precisely because it is unexpected and therefore inherently “margin.”