Interesting that they could also block memory formation in addiction centers. I wonder if there is a preventative treatment possible in that direction, by blocking addiction before it happens? It's a nice dream, anyway.
Err, err, centralized government bureaucracy imposing own will-of-committee between world and consciousness to inflict totalitarian conformance to pre-approved homogeneity ... not good, even if: drugs/childporn/terrorism/etc.
What makes you think this is pushed by the government? I'm envisioning opt-in.