If we truly are going to the "more vertical" part of the S-curve,
The accelerating part of the S-curve is only ever exponential growth. It just starts to feel "vertical" to us humans at some point. It doesn't ever go faster than exponential growth (in the ideal curve). The first half is exponential growth and the second half is logarithmic leveling off.
correct, and so far we still seem to be in the first half, and it will likely take a while before we reach the second half.
I wouldn't be so sure about that.
Almost by definition, it will be fast.