I think you are saying that the publicity of Bitcoin will have created awareness of blockchain concepts, and from the ashes of Bitcoin will rise a blockchain that could be a good currency, and that new blockchain couldn't get awareness without BC's headline-grabbing hype that clears the way.

That makes sense. Maybe BC is just the sacrificial starter we needed to ultimately result in adoption of a blockchain that works better. And some people will make a lot of money from BC, some people will lose a lot, and in the end we'll get something better.