It's not surprising here on Lemmy, but on pretty much every other site I've ever mentioned issues I've had with Amazon, the replies would be filled with people claiming it is the best customer service, that they've never had any issues with Amazon at all, and that it must be something I did to cause the problem.
Personally I stopped using Amazon on a regular basis almost a decade ago after it was clear that the company I first started using back in the mid 2000s was irrevocably changed for the worse.
I definitely miss the cached pages. I found that I was using the feature very frequently. Maybe it's just the relative obscurity of some of my hobbies and interests, but a lot of the information online that shows up in search engines seems to come from old forums. Often times those old forums are no longer around or have migrated to new software (obliterating the old URLs and old posts as well).