If we’re talking christian mythology, i’d have two answers: Theoretically, he should. In practice, the christian god is the god with the least understanding of anything he supposedly created, if compared to any other mythology.
Almost all his precepts are blatantly contrary to what facts point towards as the “natural order”, his actions are as incoherent as an epic poem in ten books that has been fed through a paper shredder and rebuilt radomly from its pieces, plus he seems to have no clear understanding of what his powers ultimately are.
Just think of the Leviathan, a terrible monster that god supposedly created in order to later kill it on judgement’s day. Why would you create something that has no purpose other than being your enemy, only to kill it later on? And, mind you, leviathan is not one of the fallen angels, he was never intended to be one of the good guys. Then again, if we take the bible’s word for it, god is omniscient, so none of the fallen angels were meant to be the good guys to begin with or he would’ve created them good.