Given that TV shows strongly influence what most people think (rightly or wrongly), it's clear that no society aspiring to humane and civilized values can tolerate programs that encourage false beliefs. Studies have shown, for example, that juries comprising people who've watched TV crime shows place absurd credence on forensic evidence despite being told how fallible it really is. Likewise, people regard police officers as trustworthy because of the way they are depicted in TV shows, despite enormous evidence to the contrary. Thus, as TV shows shape perception to an alarming degree, it's reasonable for us to expect that harmful shows are removed and replaced with entertainments that distort reality just a little less.
Of course, the best outcome of all would be that people understand everything they see on TV and in movies is the most absurd unreal fiction. But as that will never happen, pulling junk shows is the second-best alternative.