Or even 1e-24 if you wanna get super technical ;)

That's a big "if." They're talking about ft of the transistor used in saturation/active mode; for most devices ft is much higher than the maximum switching speed.

Before you get yourselves worked up, realize there is no mention in this article or the original article in "Science" for applying this for computing. There's somewhat of a misstatement in the technology review article - if you look at the actual article in Science (http://www.sciencemag.org/cgi/content/abstract/327/5966/662), the 100GHz figure is the unity (or cutoff) gain frequency (e.g., how high of a frequency you can build an amplifier) and not switching. There is no mention of switching in the paper by the IBM scientists, and that is the application relevant to computing. Even TFA's expert is talking about using this in analog communication frontends, folks. Sorry.