Personally, I think he's crazy.
Needless to say it should be done away with and it would not be tolerated in a Catholic society, but what's he going to do, prosecute and incarcerate 90% of the population?
If that were law, it would have to be enforced selectively.
To me it sounds more like an excuse for them to arrest citizens who are critical of the government but haven't committed any crimes.
BTW, even if you never viewed porn, they could easily upload it to your computer with a virus and then claim that you did.