But isn't our relevance a concept of our own design? We consider our works to be "achievements" because we tell ourselves they are - but I can't point to a sing

But isn't our relevance a concept of our own design? We consider our works to be "achievements" because we tell ourselves they are - but I can't point to a single non-human entity that considers what we've managed an "achievement". If we had autonomous vehicles would millions of people become irrelevant? Their "relevance" is solely constrained to trucking? Or are you projecting that "relevance" of people is constrained to their ability to work as a cog in your society? I would love a future where so many pursuits are actively being consumed by computing that I can just enjoy a life of pursuing whatever I figured was interesting at the time. Where I wasn't constrained by work not because I was "irrelevant" but because the notion of needing work was.