The point is wrong, they don't have any claim to having created deep learning and so their perspective can't be used to argue for the reality of "superintelligence". Even if they did create it, the question of whether "superintelligence" is a meaningful concept or not isn't really related to what they would have had to go through in order to make deep learning work.
So in computer science nobody can claim that they are the godfather of X. In physics too because everyone was based on mathcfrom ancient Greece. I get your point. Let's focus on the important stuff. 2 out of 3 Turing award winners related to this tech put up huge warnings. You think a) ignore or b) take seriously?