I propose that you invest in a more convincing line of argument. The burden of proof lies heavy upon you.
Secondly -- for the life of me -- I don't see how we got from "prosperity doesn't come from jobs that are little more than make-work" (a claim, by the way, that Keynes would take exception to) to the view that automating most of the intellectual work on the planet will have nugatory impact, or that we'll all just vy to become celebrated Twitch streamers or influencers or whatever (assuming that synthetic influencers don't take off -- oh, wait, they did: https://www.synthesia.io/glossary/ai-influencer)
Even were you correct (and Keynes wrong), the instantaneous conversion of meaningful labour --- journalism, counselling, engineering -- into, as you say, "make-work" (the position I infer you are taking) would have tremendous cost.
Need I invoke Rawls here on widely-distributed self-respect/self-esteem? It's actually one of the prerequisites, he notes, for a stable civilization; https://academic.oup.com/book/32571/chapter-abstract/2703665...
At minimum, the psychological impact of such a transition would make the developed world's COVID hangover look like a day at the zoo.
Finally, the Parable of the Broken Window specifically refers to destructive work. Non-productive work is not covered. https://finshots.in/archive/dig-holes-and-get-paid-to-fill-t.... And that is to say nothing about how economic fruits are distributed -- a whole other matter, upon which, I again infer, you have no further comment.
Up until Louis Pasteur invented the germ theory of illness, it was broadly understood, across many different cultures, that disease had its origins in one or all of: witchcraft, possession, loose morals, blocked meridians, etc.
Were you to do historical induction on the spawning of illness theory, you might well conclude that no theory of illness would be scientifically verifiable. You might have argued that anyone claiming a radical change in medicine was deluded, alarmist, or simply excitable.
And you would have missed out on the multiple decades of extra health that you've had on account of antibiotics, sterile procedure, and disinfectant. Your induction from history would have caused you to miss the disanalogy.
Something to think about next time you're at the doctor.
As to distribution of economic fruits, as I mentioned before, replacing labor with machines made the US the most prosperous country in history, along with the richest poor people.
Your country, the USA, is very close to system collapse because of its inequal distribution of fruits. I daresay it makes good popcorn-time.
Sorry, but breaking a window and then fixing it is non-productive.
> Your country, the USA, is very close to system collapse because of its inequal distribution of fruits.
Hardly. If the US will collapse, it's because of the current leftist swing of the government engaging in ever-increasing wealth redistribution.
> I daresay it makes good popcorn-time.
It's the equal distribution of income countries that repeatedly collapse. France is in the news currently because they've discovered that the math of redistribution does not work, and the people who cannot accept the math are rioting.
The "this time it's gonna be completely unlike anything seen before!" is much more suspect.
> fleshing out your position here
https://en.wikipedia.org/wiki/Parable_of_the_broken_window
The parallels with your theory are unmistakable. Prosperity doesn't come from jobs that are little more than make-work.