I've been sitting on a paywall-killer browser extension I wrote for a while... concerned about a potential CFAA violation from a big org, especially if I were to charge for it.
Make the extension generic and give away "rules" separately for specific sites. For instance, if it's just a "referer" header injector, just release it as that. And no, unless it's novel, don't try and charge for it.
I mean, you are essentially charging others for access to something that's not yours to provide access for (paywalled news).
I think the word you were looking for was "Stealing".
Oof, mea culpa - let me be clear, I would not charge for a circumvention tool, on moral /and/ legal grounds. That sentence was intended to allude to the original post's entry calling for "a more cost effective way to never see a news paywall again."