Who is staying complacent? We don't have increases in free time because work is not zero sum; technology enabled more productive work to be done (human computers versus, well, electronic computers) but we still have a
lot more work to do. We haven't even reached type 1 on the Kardashev scale, meaning that we have yet more to do.
AI will similarly increase out productivity but the work will still continue, because humans are an inexhaustible species, we always want to do more and more.