Heh. They're dead right about the difficulty of cutting through a million options. I feel lame every time, but I find myself just going to thesweethome.com or thewirecutter.com, and then buying whatever they tell me to :-/ Either online or locally, whichever is more convenient and/or cheaper.
tl;dr - My best isn't necessarily your best. We're different people with (likely) different needs. That seems pretty foreign to me. While I would definitely look at something like that (although I've never heard of either of those sites until now, thanks), it seems weird to me that people would assume what some website thinks is "best" is so accurate as to accept their recommendation without doing any research whatso…
Products in a given category aren't usually trading off their features and price perfectly. There are some products that are significantly better than their competitors in all metrics at the same time; then most of the products in any given category are a mix of weird attempts at market segmentation and companies trying to simply scam you. Therefore it's not surprising one can often select a product that is objectively the best for vast majority of potential buyers.