This show would never survive current year watchers simply on the basis that people (read: youtube video essayists) would begin questioning the world building of the show. Like were there imaginary friends during world war 2? Can imaginary friends die of old age? Is it legal to kill imaginary friends or are they more like a pet? Can imaginary friends breed or cross breed? Can a kid just make new imaginary friends on the spot and kill them for sustenance indefinitely? Can imaginary friends practice religion so when they die, they'll meet their respective god?
This is a show that definitely didn't held up as well compared to other big hitters on CN, but it's probably one of the more thunk provoking over how horrifying you can push the concept of it.