Why the disbelief?

RIght, because middle eastern isn't a minority right, or do you think he is supposed to be white?

Not LEARNING disabled, but I did see a girl in a wheel chair for a split second.

Please, go to Korea, Japan, China, India, etc, and complain about how THEIR movies aren't diverse enough, maybe not enough Inuit actors or something else equally stupid. You want diverse, make you're own diverse movie that includes every possible minority group. Stop b!tching about everyone else. They put up the money, they get to decide who's going to be in it.

As I remember:

Aladdin (1992) is set in a Arabian Nights setting corresponding roughly to sometime between about maybe 700 and 1800 AD.

Snow White and the seven Dwarfs (1937) is set in a fairy tale medieval age about roughly 1000 to 1500 AD.

Sleeping Beauty (1959) is set in the 14th century (1301-1400 AD).

Cruella De Vil is supposed to be a more or less contemporary character in the novel The Hundred and One Dalmatians (1956) and the movies One Hundred and One Dalmatians (1961), 101 Dalmatians (1996), and 102 Dalmatians (2000).

The technology on Aurdon seems more or less contemporary in Descendants (2015).

One can assume that Jafar and the Evil Queen ("Evilina"?) flourished at the same times as Maleficent in the 14th century, but there is no strong evidence for that assumption. In any case, though Cruella might still be alive but probably too old to be dangerous, and Maleficent might be immortal, Jafar and the Evil Queen should have been dead for centuries.

Maybe Jafar and the Evil Queen should be considered evil but smart if they discovered magic to keep them alive for centuries.

Thus the villains seem to have lived over a period of six hundred or more years. If some magic can keep them from dying of old age, or bring them back to life after dying of old age, it can probably bring them back to life after being killed violently.

Thus there seems no logical problem with some of the villains having been killed off in some of their movies.

Besides, Descendants (2015) might be in an alternate universe to the main Disney versions of the stories, an alternate universe where the villains were defeated but not killed.

Or maybe the villains weren't really killed in the Disney versions.

Maybe the Evil Queen grabbed onto a ledge and the boulder missed her as it fell down the cliff.

Maybe Maleficent was only wounded because the sword missed her dragon form's vital organs. Maybe she recovered later and crawled out of her pit and flew back to her castle.

As Jafar can attest thanks to Hades, death is less permanent than people tend to think.