Inflation is created by pumping more money into the economy. I don't think a UBI is achieved by printing more money.
The universe is limited, and there will be limits. However, I do think we can extract more than enough power resources from renewables to sustain human requirements. There will be other limitations, like food and water, etc. That's something that will continue human intervention and continue to create inequality. I don't see any way around this at the moment, unless the human population declines.
We can just disagree, that's fine. I'm not looking at this as rainbows and unicorns in some kind of perfect fairy tale land. I'm simply saying that there won't be enough jobs for the majority of people, there won't be the need. Will they find other purposes and create value in the world - yes. But, it won't come in the form of a paycheck from a company, because companies will be able to optimize their operations to the point where these people aren't needed.
Can you tell me what these people are going to do when they're not working in factories or driving vehicles for logistics? I'm really curious.