The other rule is that the JS is all hand-written. No frameworks or other dependencies.
A great way to make your browsing better is to disable 3rd party scripts by default and whitelist when needed, but <noscript> fails to work in those conditions.
It's worth saying that most people don't even know what Javascript is, full stop. Weirdly enough my now mother does, but my younger sister doesn't - we now have a generation that has effectively grown-up post-smartphone, which is fascinating to me.
if you disable 3rd party javascript, (using ublock origin or others) noscript tags don't trigger because scripting is still technically turned on and noscript tags aren't assigned to the script they compliment so the browser has no way of knowing which ones to run or not run in the 3rd party situation.