Ah, a voice of reason!
All televisions manufactured during this century have to have V-Chips and parental filtering built in, and all broadcasters and most online streaming services implement the VPRS system. This puts parents in control of their children's TV watching -- assuming that they care enough to take the five minutes or so to program the filter.
Unfortunately, too many parents consider programming the device to be too much of a bother, and so they want society to protect their spawn from material that they consider unacceptable.
This, of course, raises multiple problems, the most obvious being deciding what is and is not acceptable. Not every parent agrees about this. Some find swearing offensive, others nudity, others violence, and others televangelists. So who gets to decide? Where is the line drawn?
That's why there exists a V-Chip: so the line can be drawn where each parent decides it should be. Other lower-tech approaches include placing the television in a family room where their children's viewing habits can be directly observed. Parents who fail to use one or the other method of supervising their children's exposure to potentially inappropriate content are abdicating their responsibilities.
Rich