Idiotic because MILLIONS upon MILLIONS of 30-pin compatible devices are already in consumer's homes around the world.
Switching from Mini DVI to Mini Display Port to Thunderbolt is NOT the same thing. I don't lug my MacBook Pro around connecting it to my car, to my boom box, to my other car, to the dock on my stereo system, to the dock in a friend's car, to the 30-pin connector in a rental car, to the 30-pin connector on the clock radio in a hotel room, etc...etc. Generally, people don't do that with an iPad either. But MILLIONS of people want to do it with their iPhone.
There was NOTHING "broken" about the 30-pin connector. Except, of course, in Apple's eyes because the ability to profit from licensing the connector had reached terminus.
Mark