There's a lot I have to say both for and against your point, but I'll keep it at two things to avoid some retarded essay post.

Not saying this isn't true but Slavs and East Asians have this issue as well. I've seen a lot of Russian, Serbian and Japanese media that are unbelievably fucked up and make Jaws look tame by comparison.

I think the bigger issue with Jaws is that it got a PG rating. That was before PG-13 and sure it was movies like it that made the middle rating necessary, but it almost feels like a deliberate move to traumatize children. On the flip side G rated movies used to be much more like PG and PG-13 rated movies now, I sometimes worry the opposite is true and we've been so over sensitized that we can't deal with things our ancestors would have considered pretty pedestrians (see people flipping out over the process of butchering an animal for meat)