Nasty OS X design flaw: Spotlight and sleep

This was taken from a good OS X tech article on why a machine might not stay asleep. One item stood out.

Mac OS X: Why your Mac might not sleep or stay in sleep mode: "Spotlight

... Your computer will not sleep if Spotlight is indexing content, because that requires hard disk access. For example, if you just installed or reinstalled Mac OS X, Spotlight may need a while to index content...

Wow. That's one heck of a design flaw -- more than a mere bug. This may explain all those dead laptop drives from owners who closed their new MacBook, stuck it their bag, and expected it to sleep. If Spotlight was at work in the background, the machine won't sleep.

Dumb.