Amazon has suspended big sellers like Mpow and Aukey for this practice, so they do take action on these tactics
I understand that, so I only leave reviews on the product if it's a single seller, selling their own product. I think "this product comes with a scam offer" is a valid review of the product.
I also leave seller reviews, of the seller, on the seller's page. (Many people don't realize you can do this.) These are deleted too.
I went down a long odyssey recently of trying to get a refund for a food item that was four months expired the day it was delivered. Amazon refused. I escalated it. Amazon refused again. I tried to leave a bad review. Amazon deleted it. I reviewed the seller itself. Deleted again. Kept trying over and over again for several days, making ever so slight tweaks to conform to the policy. I came to the conclusion it was simply impossible to leave a negative piece of feedback.
If you did stop buying from them, I hope more people follow your lead!
I hope for a future where their monopoly position is litigated away so that there is a fair marketplace with other options for next day delivery for common household items. I prefer to shop in brick and mortar stores, but there's definitely a legitimate use case for next-day delivery of household supplies. I have a family member currently experiencing severe mobility issues who lives several hours away from me in a rural area, and unfortunately Amazon is the only way I can get things like household medical supplies to her door on short notice.
All those fake positive reviews also go along with the new product.
Therefore the only logical thing to do is to associate these reviews of the practice with the original product, as an indication of review quality.