However, in my opinion this would be acceptable if it were the intention of the user. I hold the point of view that it is entirely my decision how to display websites on my devices. For example, it is up to me whether I display ads, run Javascript, or Flash. Similarly it would be okay if I decided to install a program that replaced ads on popular websites by different ones.
But it seems obvious to me that the users installing this software have no clue what they are doing, and are in fact essentially installing hidden malware. And this should be the way this problem is attacked and dealt with. Not via some perceived moral rights by websites to not have their ads replaced, but simply by the fact that this company is essentially installing malware without consent. This is what should be criminally prosecuted in my opinion.