I don't think they are conflating ad block with any particular SJW issue nor promoting or decrying adblock. Its more just that this episode was totally about ads and the internet. If had been more of a stand alone theme than tied in with the continuity of this season no one would think to ask where the connection was. The native advertising thing feels like more of a tangent they've delved into for the past few episodes than something related to the PC theme.
Er, wait. PC...PC principal, personal computer, the computer staring back at the kids. He's literally a PC principal, he and Leslie were both actualized as psychical embodiments, now he's a PC or in PC's and targeted advertising is his whole prime directive. Which means Leslie might actually be fighting him after all and not betraying Jimmy, she just needed him out of her way to go to work without his interference. If any of this turns out to be true I swear I just thought of it while typing the post. I didn't see it postulated elsewhere first.