Okay lets break it down....
Yes Anonymous can do bad things, yes illegally downloading songs and such is bad. but lets face it, Artists know full well that their songs/albums can and will be illegally obtained. It is impossible not to have this happen.
Gene Simmons is in way over his head, you cannot take down anonymous, because everyone is anonymous unless you deliberately put a face to your words. It is full on stupid to sue everyone into oblivion for downloading a song or 2. Anonymous may have done fucked up stuff in the past, but how often does it really truly hurt anyone?
Anonymous has done some damn good things too, already mentioned. Such as the people who abused animals, putting them in trash bins or whatever. This stuff exists on the internet, saying it all comes from 1 or 2 websites, *4chan or Ebaums* is in itself, very ignorant of you. There is not much original stuff that starts on those few websites 1st, most of it comes from other places.
What Gene Simmons is doing is trying to get publicity. Anonymous doesn't outright attack people, unless they did something wrong, or provoked it. Trying to take away the internet, is like trying to control every aspect of the weather, you may control 1 part of it, but it's impossible as a whole to do so.
Tl;Dr... Read it anyway, but it would have to be, Gene is just being a Jew, trying to get money. Artists know full well they won't get every penny they deserve, and they still produce music because it's their job, if I may put it that way.