Once upon a time, Bill Nottingham notting@redhat.com said:
having every system installer have to write /proc, /sys, and so on is pretty wasteful.
I've seen this said at least a couple of times. In what way is it "wasteful"? On most systems, /etc/fstab is going to be less than one filesystem block anyway, so there is absolutely zero "waste" going on.
If "waste" of a few dozen bytes is now an issue, /etc/fstab is hardly the place to start.