I think the stroke of the font is just too thin, or maybe it's the font's letterspacing as well. As far as sites go in general, my eyes struggle with reading the text on Satchel in particular. It could also be Windows' rendering of the font. I see that you're using Avenir Next? For what it's worth, it looks a little bit better on Firefox for Windows. Edge Chromium and Chrome look the same. I opened up the inspector and changed the body color to #fff and it is an improvement.
The contrast in numbers might be better than HN or the Wirecutter, but I find that HN's font and the Wirecutter's font easier to read. In short spurts, the font is somewhat fine, but because reviews are so text heavy, it becomes harder to read.
Keep in mind that all of this is highly subjective and based on my personal vision.
For the screenshots:
It's hard to explain, but I want to see how stuff is organized on the screen, etc. And while I would like to say looks aren't important, I'd be lying if I said that stuff didn't matter. If you are reviewing multiple products, I definitely want to see comparative screenshots for the same function. What would be even better would be short animated gifs showing how navigation work between apps.
Oh, another thing I noticed. Your Consumer Reports style icons in the Ratings Matrix are great, but when I hover over them, I don't get a tip as to what they mean. IIRC, CR puts a legend for the icon on top of the pages that use those icons.