Because commercial reviews ae usually aimed at selling tools. They rarely go in for strong criticism. They're often carried out by professionals (journalists) with the tool on loan from the manufacturer. Reviews of older machinery is also rare. I bought my drill press (meddings) from an old boy winding up his workshop - I happen to know that model having used it years ago - vastly better than the far eastern stuff - but you woldn't find a review anywhere. Similarly my bandsaw, bought an old startrite based on knowledge of them (and there's a lot on the secondhand market as schools are selling them off) - and whilst it has lots of clout and will last forever, the adjustment on modern similar machines is rather better. You're going to be hard pressed to find reviews of older kit though.
I find there's the shiny new tool phase of ownership, followed by (with a good tool) learning its a full potential and whether it degrades gently or rapidly (batteries, chuck wear, rust, bits that unscrew/fall off) - again professional reviewers concentrate on the shiny new phase only. How can you know chisels are really any good until you've had to resharpen them a few times? Is your scaffolding any good until all the bits have had a few whacks and you find out if the joints will go together/come apart? Socket sets are good when you've owned them for a year and not managed to break any. My cheapie sliding square has gone in the bin as the diecast clamp-bolt snapped when the square hit the floor, now using my dads old Chesterman - vastly better (but where can I get a metric rule to fit it?). Cheapy mallable iron g-clamps from screwfix - tiptop. Cheapie sash cramps from Mackays in Cambridge - rubbish.
It's long-term, real-world use that tells the true story - particularly where other users can add comments/corrections.
Sooner or later I will move up to a classic, full-size cabinet makers) saw bench (probably secondhand, a Sedgwick or the like) - I don't know the models very well. Not the kind of thing you get the chance to try out much. Not the kind of thing you see reviewed. But there's lots of secondhand/reconditioned machinery dealers out there selling outstandingly good kit.