People who claim that what they (or anyone else) watches, reads, listens to etc has no affect, your argument proves it to be a lie.
"If TV does not affect behavior, then why all the millions spent on commercials?"
"If TV does not affect behavior, then why all the millions spent on commercials?"
I didn't say that sentence (I did a dumb response to it), but I do agree with you. It's one reason my parents nor I have ever gotten cable TV.