I don't understand how it hurts them...
It kills the buzz whenever they show the device prior to release (like yesterday at D7), because most people already know the features they are demonstrating, and right now they are all about generating buzz.
Like, who was surprised when they "announced" webOS has Twitter on Universal Search? It was one of the "new features no one has ever seen" they were showing, but we all knew about it because of the videos and other leaks.
But I'm glad they decided to take the polite route here, and instead of going all guns blazing, as the always litigious-happy Apple we know, and send a proper and threatening Cease and Desist letter, they simply asked to remove the videos.
If that does show the difference between Apple and Palm, I don't know what does.