Yet we also had 'comic books are making kids amoral and violent', 'TV is making kids amoral and violent', 'video games are making kids amoral and violent', 'dungeons and dragons is making kids amoral and violent'...
It says that people react to new media technologies that target children the same way pretty consistently.
True of any reaction to any object or idea.
Confirmation bias amigo
I suspect that your point was more broadly that the presence of those people somehow suggests that we should discount risks about the particular subject we're discussing today, then it makes no sense. The comic book examples only matter if you can demonstrate a systematic tendency to overrate risk.
You'd struggle to demonstrate such a tendency due to selection bias, so I maintain my position that each technology should be assessed on its own merits and not by associating it with other positive or negative reactions to other types of technologies.
The existence of one set does not negate the existence of the other.
And I bet comic stores and game stores have their own rules about obscene material ontop of the existing US rules. Hey kid put down the Stripperella.