""We know a lot of things now that Sagan didn't know" is patently obvious, and is the justification for redoing the series. Or rather doing a completely new series, and using the name of the older one as a way of drawing attention and viewers, and giving people a good indication of what it's setting out to do. (Which is a perfectly reasonable thing to do.)

And it's not a shallow and facile thing to remark, otherwise the bloke presenting the show wouldn't have said pretty well the same thing, and he's a pretty sharp bloke.

"Pretty tiresome" - I think frogprince got it about right.