I've noticed a pattern now, but it seems like every game LPER/critic or movie critic goes through a "I don't want to save the world or have a movie be about to save the world!" phase. Doubly so if it's the universe or the entire multiverse. I get where some of these people are coming from but it's called just play and watch something else. You got plenty to choose from Pat and wooly talk about this back when Rise of the Skywalker came out with lukewarm reception. Yahtzee, you're not exactly covering new ground here.
You know there's a lot of RPGs that end by killing a supernatural creature, sorcerer, deity, or someone empowered by a deity. Look no further than LoTR, a story about an unremarkable person who goes on an adventure with a fellowship to kill Satan.
Interestingly,
this video basically makes that point. It's 90 minutes but TLDW he makes the argument that Japanese history is replete with New gods replacing old gods AKA new governments and ways of live overthrowing the old ones so much that it's ingrained into the national psyche and mythos. Also probably a cry for help from the last few generations of Japanese who are expected to live for the corporation and if they're really lucky maybe they might have a small retirement and possibly raise a family before they die from stress.
FF7 is obviously inspired by Evangelion, and what could be a more poignant example of the death of God than Evangelion? God is killed, but he does not resurrect. The main character rejects the literal second coming of Jesus. He loves his life so much, he would rather die than live forever.
Also Evangelion is apparently so important that there's this notion of pre- and post-Evangelion anime. It's also called a "postmodern" anime, which I don't know if it was intended to be but that's what people call it.
So what is a postmodernism? It's a world where all the grand narratives (religion, nationalism, liberalism, marxism, etc), are exactly that, narratives, with no truth, nothing that legitimizes them except beliefs in a culture. Once you deconstruct everything to be arbitrary and meaningless, you end up in a crisis of belief. In a capitalist society, this turns into consumer fetishism, and the old gods are replaced with gods of wood and stone. We start to worship the domain of the material as a replacement of the spiritual.
So no, god killing isn't supposed to represent triumph over rampant consumerism, maybe we think it is but in reality it's a precondition for it to emerge. Whether you like God or not doesn't matter, God is already dead. We can't go back and time and unkill God, so we have to keep killing him over and over and telling ourselves that the indomitable human spirit will somehow fix everything in the end.