Why was Adam exempt from the transgression when the transgression was disobedience?

[Brakeman]

But there needs to be a fall guy for a happy ending. And he'll have plenty of company someday.

Kinda like there has to be a little bulled kid for the class to have a good laugh.

There is no basis for that assertion. The ideal best ending is when everyone wins.

Imagine the garden of Eden story where Eve shows love and compassion to the snake and convinces him and or Satan that their conflict with god was just an misunderstanding. Then God, Satan, and Adam and Eve all forgive and forget and live happily ever after. The End.

But god, being the little shit he is, wasn't powerful or knowing enough to mend the fences with Satan, and because of his social issues we get caught up in the middle of it.