> Storage is so dirt cheap today that there is zero reason why we shouldn't have reliable historic website state for everything we have ever looked at

I agree entirely, but I do about half my reading on mobile, and the phone company and the ad company have both decided that I shouldn’t be able to run extensions of any kind in the browsers available on my phone company phone or my ad company phone.

I’m not really sure of the solution. I had planned to start a business around this, but without mobile support it is probably a nonstarter.