To be fair, the websites you listed are extremely difficult to use anonymously with or without JS enabled. Most of the popular sites go pretty far out of their way to attach you to an identity that can be used to identify you outside their website.

If you’re using Tor to do your Amazon shopping - I wouldn’t recommend using the same environment to do anything where your anonymity being compromised could put you in danger since you just gave Amazon your credit card and mailing address.