We all think that we have an objective view of the world, and that it's the other people that must have it wrong. I can only conclude that I would be very foolish to believe that out of seven billion people on the planet, I'm the one that got it right.
(That being said, the extremist hacktivist is sort of necessary for a show like this. A responsible, measured one wouldn't make for nearly so engaging a story.)
I disagree that the caricature protagonist is necessary. I think a more nuanced hacktivist character could have made the show much more ambiguous, and in my opinion, interesting, maybe approaching some of the complexities inherent in the material.