A star rating mixes the product, the seller, and reviews that only talk about shipping. It never says whether people would buy it again.
they counted is for shoppers deciding before they buy. Search a product and get yes-or-no counts: would buy again, does the job, worth the price, matches the description, broke or stopped. The quotes sit under each count. Delivery-only reviews are left out. A mattress also asks if it sagged or slept hot; headphones ask if the battery matched the claim.