Because they scare me the FRICK out.
Talking for real, one look at the IMDb parent's guide just speaks for itself
The USA certifications are set to "TV-MA (some airings)" so I guess that's enough to qualify?
I'm convinced that those "severe" rating reports are some troll operation.
It probably shouldn’t be considered mature. I’d say it’s rated PG-13.
^The series has blood and gore.
Because it's so scary! But seriously, it's like the opposite of mature.
What do you think?