This is the old "siiiiiir why do we need to do this if we have calculators"? It matters - https://www.edweek.org/education/little-numbers-add-up-to-bi... Students who know the facts will be better at math.

Even if the computer is doing all the thinking, it's still a tool. Do you know what to ask it? Can you spot a mistake when it messes up (or you messed up the input)? Can you simplify the problem and figure out what the important parts of the problem are? Do you even know to do any of that?

Sure, thinking machines will sometimes be autonomous and not need you to touch them. But when that's the case, your job won't be to just nod along to everything the computer says, you won't have a job anymore and you will need to find a new job (probably one where you need to prompt and interpret what the AI is doing).

And yes, there will be jobs where you just act as an actuator for the thinking machine. Ask an Amazon warehouse worker how great a job that is :/

Everything is the same as with calculators.