Yes! Crap!!!
Look, believing in God doesn’t mean that one has to believe in every word of the bible as written.
The bible was written by man, and perhaps inspired by God. But, the bible has gone through many revisions through the ages, and, like the history books where people get to rewrite history, the bible itself can be revised with the beliefs of the most current writers, which makes it subject to the whims and wishes and biases, and yes, even goals of those writers.
Man invented dragons with his imagination, and it’s likely that Satan was manufactured the same way and made part of the bible. Again, we don’t need a fantasy in order to believe that there is evil and that one might get punished if one does commit evil.