Yes, there is an addiction, I know lots of people that cannot control themselves, they are on the net a big portion of the day. either on youtube or any other time spending site.
Putting a filter will not take away the additiction, however it will put limits and borders as to where the addict can surf.
Guard your eyes, will at least make the surfer think twice before he/she clicks on the site. (unless they are unashamed on their actions.