I recall watching a video about the nature of how things are stored at Amazon warehouses - basically if there are multiple sellers offering the same item it all goes in the same bin. Even if you are providing a genuine product, there’s a very good chance one of the other sellers is not, and that counterfeit gets sent out attached to your seller ID. Then you get a complaint for selling a counterfeit item someone else provided.
Then when that seller is caught and booted, they just register another trademark with 5-10 random characters and do it again. This is causing a massive headache for the US Trademark Office as well.
Having worked for Amazon across multiple facilities. This is not true or at least wasn’t. When stowing everything seemed pretty random for spots. Seemed to be where ever there was space. But the items themselves when not sold directly by Amazon use a different set of numbers than the B00 number I think it is an FBA (fulfilled by Amazon) number.
That being said, just going to the bathroom was enough to tank the rate for day and have to play catch-up. Lunches reset this.
In one facility they caught two people in a Gaylord having some relations. Same facility they found a used sex toy that had biological material.