The only issue I have with it being actual Chuck instead of an imposter or the Antichrist is that despite season 11 feeling like the big fina FINAL boss type of deal with Amara, the Jack build up and story leading here has insofar been on the level of the original story arc leading to the apocalypse. Angels falling from heaven and heaven being in disarray lead to nowhere and was just a poor excuse to nerf their powers, Amara and everything leading to Amara as well as the succession of King of Hell was all just there, but the Jack story has been built up in 3 seasons with a proper line of sight, little to no hiccups and was actually enjoyable. I had to look things up to even remember that Season 12 and 13 were even separate seasons and that this journey has gone on so long, which for me is a good thing. 3 seasons of jack leading to The Empty and the potential of a being that could control all the Angels and Demons that have died would have made a great series finale, throwing in a proper apocalypse is also excellent, but Chuck going evil as well? Yeah I'm gonna draw the line there as well, maybe. I still think its not Chuck, or thst Chuck was actually evil all along and made them think he was god.
Nah man. The point is that God is evil. He lets all evil happen. It mirrors what I'd feel about the Christian God if I thought that existed. Read the Bible - God is awful.