You might be correct about LLMs. Let's say that you are.
40 years ago we were clearly compute bound. Today, I think it's fairly clear we are not; if there is anything a human can do that an AI can't, it's because we lack the algorithms, not the compute.
So the question becomes, now that we have sufficient compute capacity, how long do you think it will take the army of intelligent creative humans (comp sci PhDs, and now accelerate by AI assistance) to develop the algorithmic improvements to take AI from LLMs to something human level?
Nobody knows the answer to the above, and I could be very wrong, but my money would bet on it being <30 years, if not dramatically sooner (my money is on under 10).
It seems to me like the building blocks are all here. Computers can now see, process scenes in real time, move through the world as robots, speak and converse with humans in real time, use tools, create images (imagine?), and so forth. Work is continuing to give LLMs memory, expanded context, and other improvements. As those areas all get improved on, tied together, recursively improved, etc., at some point I think it will be hard to argue it is not intelligence.
Where we are with LLMs is Kitty Hawk. The world now knows that flight (true human level intelligence) is possible and within reach, and I strongly believe the progress from here on out will continue to be rapid and extreme.