Yep. And the browser vendor can make changes to DevTools, archive.ph is already privacy-unfriendly and blocked in some countries, it could disappear, 12ft.io could disappear, and so on.
The fact that seems least likely to change is that most "paywalls" rely on Javascript, CSS or some other "feature" of so-called "modern" web browsers.
I have lost count of how many times an HN comment alleges "paywalled" in a thread and I am reading the article just like any other because I am not using a graphical web browser. I would not even know there was a "paywall". Paywalls have dependencies.