This is a huge escalation of an already over-stuffed term.
Equating piracy to theft was bad enough, now choosing to not view ads is also piracy, which is theft?
I try to be chill here but no, foot down, absolutely not. Blocking ads is nothing more than determing what content comes in on the wire to the computer you own, or what content is rendered in your web browser. That's it. If that means someone isn't making money when they could be, well, too bad so sad.
It's like, "if you walk past a Nike store without pausing to hear the sales pitch, you are stealing from Nike." Capitalist hellscape.