Nope. As mentioned above, apparently Google thinks people will "shoot themselves in the foot" with the crawl-delay directive, while they won't with Google's special interface (which requires registering and logging in).
I can't imagine that they are just guessing abut this. I'm sure someone tried implementing it and was horrified at the actual results before they gave up on it.
What more can you expect from the World's Largest Adware Company?
Seriously, one thing about Google is that they seem to really like ensuring people are logged on, preferably at all times. Fortunately recent changes to Google Apps (promoting apps user accounts to full Google accounts) has made this more complex on my side and probably degraded the level of actionable info they can get out of it.
