> Maybe we need to acknowledge that we're moving towards having a society where "everyone has a job that earns them their living" is untenable
No, we need a society that guarantees everyone a job, a job that will generate the income necessary for survival. We shouldn't give up agency and become simple wards of the state, waiting hand stretched ahead for the UBI to fall from the crumblings at the tech billionaires table. UBI without jobs is humiliating and lacks vertical mobility. Self reliance is good.
The slogan should be "Give us jobs or give us the means of production!"
In the future it will be easier to be self reliant by using solar energy, agro-bots, 3d-printing and various biotech and materials research technologies. We can be self reliant, we don't need no stinking BHI. We don't like to be passive and hand our dignity out for a penny.
As a final argument, think about this: what is cheaper? what is more tenable - to hand out free money to everyone, or to create jobs that pay for themselves? The jobs could be - cultivate your own food, raise your own house, educate the children of your community, repair cars and electronics for local people, etc. Most of the jobs emerge from the needs of the community, so the community can hand them to itself. Then only a small amount of external aid could go as far as a huge amount of UBI.
The name of this philosophy is Local Self Reliance and it is related to Distributism (https://en.wikipedia.org/wiki/Distributism).
A list of related concepts: community ISPs, credit coops, anti-trust, buying from local businesses.
This is a promo video from the Institute of Local Self Reliance: https://www.youtube.com/watch?v=kDw4dZLSDXg