Very interesting point, except that in my case in particular it will be a while before automation replaces my position. I am the one that actually builds and programs the automation, then have to maintain and repair it as it malfunctions / wears out.
The other aspect is to design the prototype requires considerable foresight into what tasks you want the equipment to perform, there is a significant difference between transportation and textiles for example.
I can see where AI will be beneficial, and will help with the design process, but suspect it will be far down the road before automation can accomplish this on its own.
One down side that I foresee with UBI is that when people no longer have to work for what they have, they will have little or no respect for it. If you look at subsidized housing, the buildings are usually in terrible condition, because the inhabitants simply don't care.