No, it is a fact. You can have a smooth criminal cleric. A greedy charlatan paladin. A prideful barbarian scholar (NERD RAGE!).
The backstories are very connected to their classes though. Gale for example, is more than just a prideful scholar, he is intimately connected to the Weave and chosen by Mystra the goddess of magic. Hardly makes sense for a fighter to be the consort of the goddess of magic and experiment with Netherese magic.
