Just went and read the entire article. That's pretty much spot on. Journalist sneaks into Amazon warehouse with a camera, interviews drivers, gets caught, and then has the idea to sell bottles of piss (real piss? Fake piss? Empty bottle? It's not specified) on Amazon. Which some people then buy and then an Amazon automated service contacted him about boosting his business.
There's also a bonus bit in there about his daughters being able to buy knives and rat poison from Alexa without any age verification.
It brings up some notable points in the age verification section, and it brings up some notable points about life as a delivery driver, but as far as the actual product is concerned it's hard to paint Amazon as the bad guy this time. This is clearly a ridiculous item. If you're shopping and you click on and order a clearly labeled bottle of piss, when it arrives on your doorstep that's your own problem.
That said though if just anybody can post and sell literally anything, even things like that, and Amazon does nothing to monitor what they're selling through their site - well, Amazon is going to get flooded with garbage and scams sooner rather than later.