That's a compliment. Disney can get pretty dark when it needs to.
The song Hellfire from Hunchback of Notre Dame. You know, the song where the priest is determined to kill the female lead to save him from temptation.
The segment "Night on Bald Mountain," original Fantasia (the one with the devil-like lead.)
Bedknobs and Broomsticks, at one point the Nazis try to kill the main characters.
Even the Princess and the Frog, with the song, "Friends on the other side." Especially the version at the end, where they make it clear that the bad guy isn't going somewhere nice.
I'd say you're onto something. Then again, I've been saying that for years. Michael Eisner was the worst thing to happen to Disney. So while I do think that DA can get really cheesy like Disney can, it still can get as dark.