Of course they haven't. I assume they think "role-playing" a sorcerer involves actually dripping a pentagram in sheep's blood right there on the table. Never mind that that tends to ruin your character sheet.
The same thing happened with "Harry Potter". It was declared "satanic" when it was just a book. The Bible is full of accounts of Socery, magic, demons and devils....reckon is it "Satanic" too?
Nobody ever had a bloody crusade and killed thousands over a game of D&D gone awry or a dispute over "Harry Potters lightening scar, mark of the beast or instrument of the lord"...that I'm aware of.