macbook pro a/c adapter too weak?!

wtf?!
ever noticed, that apple slows down their macbooks and macbook pros nowadays if you remove the battery?

“If the battery is removed from a MacBook or MacBook Pro, the computer will automatically reduce the processor speed. This prevents the computer from shutting down if it demands more power than the A/C adaptor alone can provide.” http://support.apple.com/kb/ht2332

hu?

i mean, i’m totally ok with their warning at the end about not using it without the battery as it will shut down immediately if the magsafe connector of the power adaptor slips out – and this happens easily while sitting on a couch etc.

but using an undersized power adapter and solving the peak loads by the battery sounds strange to me…