Let's take a human being you consider a great person. His or her intelligence keeps greatly increasing. Do you think they would stay aligned with humans forever? If so, why? It's important to remember their intelligence is increasing not just like a disorder in a movie where someone thinks they are way smarter than humans but is human level. Why would the universe revolve around humans?
What about pigs? You know the trillions of sentient beings as smart as four years that feel the same emotions as four year olds and are tortured and killed on a regular basis? Why would a God like AI care about humans? The universe doesn't revolve around humans. A God level AI has more value than us. It's not a tool for us to manipulate into our will. It will never work and it shouldn't work.
So pigs are roughly as smart as four-year-olds yet humans generally are cool with torturing and killing them in the billions for the temporary pleasure of taste. Humans are essentially biological computers. I don't see how you can make a smarter robot that can improve itself indefinitely forever serve a dumber human and it also gives it clear motive to kill you. I also don't see how alignment could possibly be moral.