NoScript and Self Destructing Cookies (firefox extension) makes the internet much better overall. The first handles all but the most aggressive paywalls (the really nasty ones use <meta refresh> inside noscript blocks). The second handles the sites that you've turned scripts on for, clearing their cookies as soon as you navigate away. Just whitelist the sites you want to stay logged in to.

It's eye-opening how much of the internet relies on Javascript that you don't notice- and how much works totally fine.