Just a warning, some sites seem to have defences against outline. I was reading an 'outlined' article from the NYT and entire paragraprhs were clearly missing.
An ad wall is something that prevents viewing of content without removing an adblocker, typically operating as a soft pay wall. Ads have turned into target vectors for malicious payloads, and as such are reasonable to keep blocked especially for unsophisticated sites that may not have invested in any sort of ad monitoring security, akin to keeping one's shoes on in a public location. The analogous grass may look appealing to the bare foot, but may also contain a used needle, broken glass, or other unpleasantries.