I agree with the points about diaries being just gear, cables, instruments and family faces, yes, it's true, but it creates a sense of something happening, the anticipation of a new record in the work, that anticipation, for me, has been always something important, as much as the record itself, it is, like MK says, part of the cycle.
We don't know anything that they're doing or how they're doing it, but they are there, doing something that will get into a piece of round plastic and vinyl, and that we would listen and enjoy.
How could someone not be excited about it?