You misinterpret, I'm not worried about my job. I wouldn't mind working less but I'm worried that sooner than we think we will be reduced to pure consumers (we're already pretty far ahead in that respect) and then life will lose its meaning...
When/if that becomes an issue, if social rejection was not a consequence of not being productive more people would be okay with simply participating in things for their own sake.
For example, I don’t play Stardew Valley because I want to be the most elite virtual farmer.
Feeling useful could turn out to be part of basic human dignity.
(I'm sure plenty of people would happily jump in to question whether we'd make it five generations past that horizon, but that's not really the point I'm after here - let's assume we haven't Idiocracy'd/WALL-E'd ourselves to death.)