If "a being that you don't understand and that is better than you at everything is a potential danger to you" doesn't convince someone, I'm not sure what further elaboration could achieve. This is a classic problem that arises in many philosophical debates. If there is disagreement about fundamentals, the debate doesn't (and can't) go anywhere.
The real problem is that we simply cannot hope to predict what an entity that is far superior to any human would do, essentially by definition. So I wouldn't frame this as a "debate" so much as two camps of different beliefs. Any "argument" made is like ants trying to understand human ethics. While I consider the aforementioned point to be obvious, I could be wrong about it in ways I can't even comprehend, and so could any other human, regardless of their degree of expertise.
Ironically, this unknown provides something like a meta-argument for extreme caution when dealing with AGI: Just like you wouldn't step blindly into a dark room that might contain a monster, you don't have to know that AGI is dangerous in order to be afraid of it – the mere fact that it might be and you cannot ever know for sure is enough.
In some ways. I can't predict Stockfish's next chess move, or else I'd be at least as good at chess as Stockfish. But even though I can't predict the detailed trajectory, I can predict certain aggregates. Like that those moves are on the path towards checkmate.
It turns out to be quite a delicate problem to create an AI that is compatible with being shut down by an overseer, and neither strives to avoid being shut down nor strives to shut itself down. Here is a paper by MIRI about this[1], as well as a paper by Deepmind presenting one possible solution[2].
[1] https://intelligence.org/files/Corrigibility.pdf
[2] https://www.deepmind.com/publications/safely-interruptible-a...
Good explainer video by Robert Miles: https://www.youtube.com/watch?v=ZeecOKBus3Q
Assuming the qualities of AGI are what its proponents claim (namely, intelligence far beyond the upper limit of human intelligence), humans "aligning" such an entity is laughable. We've had spacecraft built by highly intelligent engineers lost because they overlooked a metric/imperial conversion, and similar people believe that they can devise a watertight scheme to effectively contain an adversarial superintelligence?
The smartest humans can barely contain very small aspects of the regular Universe, and the Universe isn't even targeting them like an AGI would.