And I'm surprised how many people think they can confidently tell whether they're looking at an s-curve or an exponential function based on very limited data points. I don't even doubt that superintelligence is a very real possibility! But it might or might not happen, and if it does, it might or might not be based on deep learning.
As a counterexample: The maximum speed of travel for the average person for millenia used to be as fast as they could run, then it was as fast as the fastest horse can run, and then within a century it has accelerated to almost the speed of sound – at which it has plateaued.
Looking purely at the decades of acceleration, you might have very well concluded from the data that we'd be making significant headway towards getting within double-digit percentages of the speed of light at this point.