That only works if you do not use any of that newfangled performance stuff. Besides, we have to do the loadsheet ourselves, on an EFB, but still, then input the data into the ACARS journeylog, print it all out, put it into the FMC, wish we still had the old performance book and get a loadsheet from the central load center, much faster, easier and a lot less paper.
Anyway, i do agree with your last sentence