Goosebumps was to the late 90's early 2000's what Are You Afraid Of The Dark? was to the early 90's on Nickelodeon (Arguably the best show on Nick at the time).
I see no problem here in showing some good tv with some (albeit) sometimes scary plots. But then again, Goosebumps is self rated by R.L. Stein himself a GB-7 (for children over the age of 7).
I expect this to be shown later at night in the regular programming because of this if it were to make it's way onto CN.