I think we are in agreement - I didn't word my comment well.
When I was referring to the star rating, I meant the overall average rating of the product (ie what Amazon is trying to promote now over star rating plus written reviews).
When I mentioned the negative reviews, I was referring to the 1 and 2-star written reviews. I use the negative written reviews exactly how you described - and it's what I find valuable.
I mistakenly did not see the whole OP comment when I replied. This was my fault as I'm unused to using HN on mobile and did not do my due diligence to see the full comment.
When I was referring to the star rating, I meant the overall average rating of the product (ie what Amazon is trying to promote now over star rating plus written reviews).
When I mentioned the negative reviews, I was referring to the 1 and 2-star written reviews. I use the negative written reviews exactly how you described - and it's what I find valuable.