"No the logical conclusion of my argument is that we as a society have to start accepting that a large number of people will live a large part of their lives without being "productive" and find ways to deal with that."

I actually think we are far from that, because human wants are virtually unlimited, so there will always be jobs required for humans in arts/entertainment/engineering. Things that will always require a human judgement.

But lets assume we are? The best way to force action is for it actually happen. If we just create non-jobs to cover it up, politicians will put off doing something about it for a long time.