Language is an imperfect model of the reality. The further a discussion deviates from the observable reality, the less confident you can be that the conclusions you make within the model are also valid in the reality. Once you are talking about something as wildly hypothetical as superintelligence, words have basically lost their connection to the observable world.
If the history of science teaches us anything, it's that smart people are often stupid. They come up with all kinds of silly ideas, because they rely too much on reason and too little on hard work. And even the ones who ended up revolutionizing the world usually sound ridiculous in retrospect, if you listen to all of their ideas instead of just the successful ones.
Maybe there are some valuable ideas in the superintelligence discussion, but you can't identify them in advance.