Well maybe at first glance. But in fact the Log-Log chart simply reflects that progress in technology is accelerating. While you can argue that different choices in the selection of events would yield a different curve the reality is that it wouldn't. In fact Kurzweil shows a similar chart in his book where there were several independent selection of events and they all pretty much follow the same curve.
The message: Things they are a changing and they are changing faster and faster.
True, but the big question is when do the reach the intercept point...
While it may be true that progress in technology is accelerating, what do any of the data points at or before the one labeled "Homo sapiens sapiens" have to do with progress in technology?
The reason the chart has no objective meaning is that "Event" is unspecified.