That seems like reasonable advice until you realize you have no idea what will and will not scale in a few years, and there's only so many tailors/plumbers/welders/etc.
What it really comes down to is these options as more work gets automated:
1) New jobs doing different things that weren't done before
2) Same jobs but shorter hours so "full time" with a salary to match starts to look more like 4 days, or 5 hours/day, or something.
3) Lots of unemployment
These can happen in a lot of different combinations, they can come wrapped up in different ways, and unequally for different segments of the workforce, but there's limited elasticity in most areas where additional people piling into the field would create more demand rather than glut the supply to the supplier's detriment.
What it really comes down to is these options as more work gets automated:
1) New jobs doing different things that weren't done before
2) Same jobs but shorter hours so "full time" with a salary to match starts to look more like 4 days, or 5 hours/day, or something.
3) Lots of unemployment
These can happen in a lot of different combinations, they can come wrapped up in different ways, and unequally for different segments of the workforce, but there's limited elasticity in most areas where additional people piling into the field would create more demand rather than glut the supply to the supplier's detriment.