Abgoth is a relatively minor functionary among the Keys. He wouldn’t have it any other way. Greater responsibility means greater scrutiny, and greater scrutiny means fewer secrets he can call his own.
In particular he likes his trick for taking unsanctioned trips to earth. Abgoth slipped just enough of his name into a mortal grimoire* to allow overconfident Sorcerers to summon him. He cares little for the battle of wills, and instead enjoys the battle of wits that follows.