Superintelligence won't have the "training" issue as it would be able to see through it all. The bias issue is with LLMs. Super-intelligence would just self-correct any such biases. And we're not there yet, LLMs aren't "super-intelligence". They are some sort of intelligence, sure. But they are not that SI thing that will run things in the future.
You say that with quite an certainty but i don't think there is grounds for that at all.
Why would it correct any bias? how would it correct any bias? If data has a bias the analysis has a bias; correcting a bias against the data is itself by definition a bias.
"Super intelligence" (whatever we even define that as) will have whatever goals we give it; intentionally or not.