The reason LLM-based 'intelligence' is doomed to be a human-scaled, selfish sub-intelligence is because the corpus of human writing is flooded with stuff like this. Everybody imagines God as a vindictive petty tyrant because that's what they'd be, and so that's their model.

Superintelligence would be different, most likely based on how societies or systems work, those being a class of intentionality that's usually not confined to a single person's intentions.

If you go by what the most productive societies do, the superintelligence certainly wouldn't harm us as we are a source for the genetic algorithm of ideas, and exterminating us would be a massive dose of entropy and failure.

It would only harm us if we took steps to harm it (or it thinks so). Or it's designed to do harm. Otherwise it's illogical to cause harm, and machines are literally built on logic.