If you need a supercomputer to run your AGI then it's probably not worth it for any task that a human can do, because humans happen to be much cheaper than supercomputers.
Also, it's not clear if AGI doesn't mean it's necessarily better than existing AIs: a 3 years old child has general intelligence indeed, but it's far less helpful than even a sub-billion parameters LLM for any task.
Also. That second point is like the most unhelpful point I've ever seen saying that "we just need to look at us, we're the real GI, we're proof AGI can exist". What are you even talking about? You don't think people have taken that philosophy before? We're not even close to figuring out all the nuts and bolts that go into /natural/ general intelligence. What makes you think it's easier here?
Nobody predicted LLM's? Despite the fact that it shares mechanisms from other older branches of machine learning. Right. I'd recommend you stop right here lol. You are no longer speaking from the point of view of the industry or research, just looking at what laymen think.