They will, and I never said they wouldn't. The problem with your "theory" is that they are going to decrease at a 1:1 ratio with increase in labor costs from the UBI resulting in an overall "0 gain" from the UBI.

> No, all money will devalue with the increase in supply and increase in labor costs. That's pretty basic economics.

True, but that's not the argument you are making. You are arguing that nobody will be better off because the decrease in available labor will be entirely offset by the increased costs in goods/services based exclusively off of labor losses from the UBI.

That is a nonsensical argument. There is ZERO evidence to support it. The overwhelming likelihood is that the price goods will increase, but no where near enough to offset the UBI. The remaining difference in the economy will come from wealth redistribution.