Advertising is regular part of site content owner decided to show you. What comes next? Blockin unwanted article content on someone's blog? It's not criticism it's fascism. Do you like ads on the street? Are you destroying them? Not? Why? Aha you can't you don't have balls to do it :)
The ads on the street haven't teleported into my private property, so I can't do much about them.
The web content that my browser fetches and displays is a different matter, obviously.