If productivity is raised, who will profit from the surplus of said productivity increase? The natural thought throughout the centuries has been that once the machines do more work, the people who had to do the shitty labor will have more spare time to do things.

The reality is of course that we live in a capitalist system and if productivity increases there are people who will be 100% focused on ensuring those gains go towards the profits of their shareholders. Meaning a new machine doesn't mean you let your workers work less, it means you fire the workers you don't need and require the others to replace the work of the ones who are gone.

Now this reaches white collar workers who always thought themselves to be somewhat immune from that issue, but this is a centuries old tale for the blue collar folk. And from them you could also learn how to successfully deal with that.