Security is only part of my motivation, though, and not the main part -- I mostly do it because it protects me by default from all the pop-up type crap that so many websites foist on you. Yes, it's a pain to un-break sites sometimes. But I resent it less than going through the equivalent pain in "privacy settings" popups, wriggling chat widgets, "ate you sure you don't want to sign up for our newsletter?" nags, etc. Websites are already broken; as long as that's true, I'd rather be in control of why.

Yeah I went through this too, figuring out all the CC purchase redirects. Some are just idiotic to the point I wish govts would pass a law mandating zero redirects for online purchases. Stripe, Paypal, Square, Braintree and a few others do payments just fine without the redirects so it's clearly possible.

But eventually even that gets solved and the redirects get whitelisted. Haven't encountered this problem for a long time.

That said, when there's something old, important, and/or dumb looking, I usually spawn a new Firefox container (using Multi-Account Container plugin) and use NoScript's temporary bypass function.