There’s worse things in real life for them to see.
Yes. And life is what you make it.
My policy on children is to show them quality art that won’t disturb them too much (but will at least disturb them a little).
It really depends on the child. Some children are more sensitive to certain things than others. Children are also very impressionable, and subjecting them to disturbing imagery for its own sake isn’t necessarily a good call.
Now, that being said, I have already shown my 3 year old daughter every one of the Disney animated feature films (some of which are pretty dark for a toddler). She was really worried about Ariel when Ursula gained power near the end of The Little Mermaid, but all I had to say was that “Eric has to fight the boss. Ursula is the boss.” because she has watched me play games as well as watched Let’s Plays so she understands the concept of the Big Bad in a story.
She’s not old enough for The Dark Crystal, though.
My position is that there is a middle ground between sheltering one’s kids and subjecting them to things. Life is certainly brutal, but what we subject ourselves to influences our outlook and attitudes, and one’s outlook and attitudes matter.
JEDIT: I know I said I wish media from streaming services was held to a similar censorship standard as TV, but the truth is I really just wish I could watch a show or have my family watch a show without wondering what sort of content it has. An expectation of having to do research on every show and movie is really annoying.