"I'm going to smash all the printing presses because people are reading dumb books" is exactly why the first amendment exists.
If you must, this is like destroying foreign radio towers or something, where those radio towers have the ability to algorithmically predict what people want to listen to and then generate content tuned to affecting their state of mind, what they believe, and so on. So, yeah, blow 'em up.
Also cocaine and cigarettes definitely squelch your appetite and have historically been medically prescribed for such... It's just that we don't today