I agree with you. Your dm has deviated from basic idea for that game. Looks like he is trying to save the world from you and trying stop you instead of letting
it go to next phase where powers that be should finally realize how dangerous you are, and try to stop you, even if it might be too late, or if not, price
of victory would be high. I think your story was originally about rise of evil and killing some gods and forcing change in world's order or it's destruction,
revealing maybe your true nature as agents of entropy, where you then might ascend to even more primordial monsters and start devasteting other cosmosies like cold
hungry intelligent black holes. (I think I have seen stats here for something like that, lol). Or some other kinda ending.
Anyhow I think many here are making asumptions that interesting game is about challenge and those fearful of consequences of power would like to take away
your items of power and re-bind you before you even get to do away with some sorry priesthood.
I don't think your current dm is up to task. And neither are D6D rules, sure you can use them, but actually "use" them is slow and uninsparing as far as combats go.
When our games went beyond mortal D&D adventures we kept character sheets but actual combats used the idea of our abilities rather than abudance of details, and all combat
was basicly single success dice method, opposed rolls. Well, when there was actual challenge involted.
I think biggest problem with dm is, he is trying to use the rules too much, yet not able to. And he doesn't truly feel he owns the game. He doesn't feel ownership to the story.
Thus he is trying to rewrite it, yet he doesn't have actual better idea. So, he is doing passive-aggressive dm:ing "I have this secret, and that is why your powers don't work".
It does sound like an excuse, like a placeholder for some idea, that he hasn't have yet.
I can't know for sure since I don't know you but I feel like he does not like dm:ing it or if you are really lucky he is just missing point you agreed to and is trying to
change the premise. Talking with him is must anyhow.
I like reading about other people playing that kinda games. I like lowbie games too, but I'd played lot of really epic games. Power can be fun. It requires right kind of mind set from
dm and players though. I like games like that for stories. Some like to play it as D&D encounters, those play-styles don't mix well.
I think your dm might be great for other kinda games, but not for this one, Maybe his imagination works better for different stuff. More regular adventuring.
Cosmic change games might not be his cup of tea.
Or maybe it's just that you are trying to tell the story more than he is. That kinda playstyle works for some people but not for all. I personally prefer dm still be the main story teller, no
matter how wild games go.
Maybe he feels there are too many expectations regarding consequences coming from you. It's irritating if players keep correcting you about story elements. It really really is.
So talk with him. Tell what you want from game, find out if you still are wanting the same thing. And find out if he wants to quit this. And if he still seems to like idea of game offer to
dm it instead, or that another player. And if it's more about the story simplify the uber-epic rules. That games requires more wild imagination and less rules-mastery. D&D epic and divane books
were never that good. I think they were missing the point of epic. YMMV of course.
I hope you find some way to continue that game, that is fun for everyone. Talk about it and try to bring fun back. Don't complain and argue, that never changes things for better, I have many bitter
experiences about that one.
Good luck.
And please tell how it went. And if you do continue the game, I would love to hear what happens in it. That of course is up to you.