Some of my own critiques.
1. Nelson wanted to institute optional micropayments, like 1 cent or fractions of cents to pay to access content. This would mean that nearly everything would have a paywall.
2. With automated paywalls (to charge and to pay), would lead to scammed content like a infinite scrolling page at 1 cent a page, to not get immediately blocked.
3. The idea was that you could also charge for your content. What would happen is your stuff would get scraped, added to aggregators, and charged more while you get nothing.
4. You pay for seemingly legit content and pay for scams. No way to charge back.
5. With all this micropayments and stuff, would necessitate DRM on all 'pay' content. It would be the only way to stop downloading/archiving/reuploading with micropayments that go to me. I view DRM on everything as a computing hellscape.
6. Nelson's extreme secrecy was what caused his system to never get any traction. Those Mosaic and A-Pachy folks were like 'set up a fresbsd box and make a free website.' None of this goofy money crap.