Gotta say, I just don't get this complaint.
I mean...this is how it is in almost everything I can think of.
Any D&D adventure can have you stopping some world-ending threat noone else seems to care about. Gods included.
Any comic you pick up has random mid-level capes dealing with an alien invasion or a world-ending doomsday device or whatever without Superman or Thor or something popping in.
Any shonen anime you watch has a bunch of super powerful old retired or busy or just lazy as hell NPCs just wandering out the world doing nothing useful.
Idk, this just seems to be the normal way of operation to me, especially in RPGs. You're almost always the only one doing anything useful or constructive, and it's very rarely because you're the strongest (at least at the beginning).
When it comes to the actual gods, I think it can be excused; maybe they simply don’t care much about Earth or its inhabitants. If by all accounts they
should care, on the other hand, then it’s just bad writing to not have them involve themselves, whether that’s in
D&D or
COC2. When it comes to characters like Garth or Leofric, who have lots of worldly attachments, it’s much harder to justify their staying uninvolved.
I don’t read comics, so I can’t speak for those, but in the shōnen manga I know, the main characters usually
are the strongest people around, other than the villain (e.g.
Dragonball), or else the more powerful characters
are involved in some way, even if they’re not on the same task as the protagonists (e.g.
Naruto).