Because the sites that have set up the paywall will report the extension and get it taken down, happened to an extension that I made a while back that had a similar idea.

Why is it take-down-able?

Because it allows people to circumvent the paywall and WSJ will complain to Google. And then because Google can take down whatever they want...

Which is why you don't put your extension as s Chrome extension, but as a tamper monkey script.

What is the best, in your opinion, site to find tamper/grease monkey scripts? I remember the landscape being fragmented some time ago.

Yeah. Seems like when the main site went down, the scene never got things back on track with a proper aggregator or central site.

https://greasyfork.org/ - it's been a year or so since I've made use of it but after userscripts.org became unusable this was my replacement. they made some sensible decisions about what's acceptable in a script and whitelisted external libraries: https://greasyfork.org/en/help/code-rules

Not really. There are lots of extensions that do this:

https://chrome.google.com/webstore/search/paywall%20remover?...

I'm sure many get taken down by request but its usually on a technicality (flimsy trademark claim) or sloppy assessment on Google's part.

A Paywall Extension, hmmm? What if it were part of a dev tool bundle?

It's arguably unfair that users of Facebook and Twitter and other social media sites should have access to more content than someone who has decided not to use those platforms.

Private websites have no duty to allow "fair access" to their content. Non-users of Facebook is not a legally protected class.