I believe you did not read the article, as less than one paragraph was on the topic of physical labor, and the rest of the article was about extremely toxic occasionally outright illegal employee / employer relations.

Luckily, due to the "retailapocalpse" or whatever its called, soon virtually no one will have to labor under those conditions, because there will be almost no positions like that. Not that Amazon's warehouses are some kind of workers paradise.

I worked my way thru school in retail supermarkets roughly contemporaneous with the author's youthful experiences a couple decades ago. I see things have gone somewhat downhill since then...