Lower classes live the best life they have ever lived in history of humanity. Not only are they not living the normal state of lower class which is starving, in constant pain, infested by large amount of parasites, quite ill, and extremely overworked.
They're living the opposite life: abundance is insane, to the point where poor are fat, parasite infestations are exceedingly rare, they have a wide array of pain mitigation for when they do experience it, and they have actual legal rights in terms of work, rather than normative "work harder slave or the whipping will commence".
The sole reason for this is is technological progress and automation. It has elevated value produced by work of even lower class workers to the point where just short amount of time worked can afford them the kind of food selection kings didn't have half a century ago. The kind of health care kings didn't have twenty years ago. Etc.
This utterly insane myopia of modern Western far left when it comes to grasping that it's in fact those worst off that had the most benefit from modern economic system and its technological progress is probably one of the greatest feats of stupidity humanity has ever managed to create.