The argument isn't that we are doing something new and therefore it's bad. The argument is that the readily available information makes us lazier about remember things, and thus when we aren't at a computer, we're dumber.

And it's probably actually true... It just doesn't matter. Unless we're worried about Mad Max Beyond Thunderdome happening, then we'll have access to computers.

And the stuff we do repeated, even with the help of Google, will be memorized anyhow. Just for efficiency. It's just the least important stuff that gets left to Google to remember.