Yeah, some games do that and i'm not really a fan. particularly due to how they are structured, "do all of the everything so that you can finally play the real route for real and this is the ultimate super mega route". That's to say, if there is a bestest true ending, then it should be possible to get in a single run. When you artificially lock the best ending behind the worser ones, it's like your first try doesn't even count, cause you need to beat the game once before you can play the "real" version.
Right now I can only see the do the hermes task or not endings, but that doesn't mean I think they are the only ones there will be. I just don't have quite enough information to be making educated guesses as to what other options there will be.
The ruthless route isn't really sadistic, there are like 4 chapters but it's played from our good boy Nikos' perspective. He is at his goodest self during this route. The chapters themselves are pretty much linear with very little variation, or quite similar bits at the very least, it just has 4 different outcomes. Aside from that, there's a good amount of lore reveals we don't get in the main route yet, including one way to free Asterion, which is one of the outcomes.
Personally though, I don't think MC has that much beef with the gods. Queer people tend to be at odds with religion, considering how the most popular ones currently are constantly used as an excuse to try and abolish us. But that doesn't mean religions are always this xenophobic. Greek myths themselves are quite queer, and that's just what survived various cultural erasures promoted over the centuries.
In the trials about half of the gods were agains the labyrinth, Athena being the main one to blame and potentially manipulate the votes. But more importantly, the talk with Robert about how hells and afterlife in general work, it's implied you go to the afterlife of your specific religion, so that's why if Asterion and MC are to meet in the afterlife, one of them might have to convert, and I don't see our bull boi doing that.