FTFA: And it's not merely a matter of waiting for old fuddy-duddies who don't "get it" to die off: As the data show, older people have been among the quickest to adopt the Internet among the disconnected population.
That is conflating adoption rate with the total active users. It's unsurprising that a demographic group that is late to adopt new technology would become the fastest growing one once growth everywhere else has stopped. That doesn't prove that the remaining holdouts aren't largely represented by older people who don't need to use the internet.