Totally agreed, this a good thing.

> It is more of a monetary policy

Sure

> that has only an indirect impact on demand.

Many disagree.

Obviously the most basic goods aren't going to be consumed that much more (e.g. we might consume better food but not dramatically more calories).

That said, it's a not-fringe view that demand as been statement for ages, due to things like wages not keeping up with productivity growth. UBI is, among other things a way to fix that.