No, heck no.
Modern Disney, or at least the majority of it, is far from scary.
I mean, there are a few exceptions, like how they pulled off Dr. Facilier's defeat in "Princess and the Frog" which impressed me for a Disney film.
That and, as Zaroque said, it's involvement of voodoo.
HOPEFULLY "Frankenweenie" will pull it off as a decent scary film.
Tim Burton's lost some of his luster since "The Nightmare Before Christmas", but who knows.
But yes, it really does depend on what scares you, what surprises you, and what you can understand about it.
Even age matters, and not just on how scary it is, but to really see what makes a movie so dark.
As the others have mentioned,
a fine example of a Disney film like that is "Hunchback of Notre Dame," which, while it has those cute and funny moments, does has some very good parts that reflect on the darker side of Paris's history.
These dark scenes cannot be found in Disney films today.
And remember good old "Fantasia?"
You know, the scene with Chernabog?
Yeah, zero percent chance you're gonna see that in a Disney movie today.
So, I've abandoned Disney, with the exception of Pixar.
Truth be told, the last animated film that really scared the bejeebers out of me was "Monster House" but that isn't Disney...