It may not be a silver bullet, in that it needs lots of low level human guidance to do some complex task.

But looking at the trend of these tools, the help they are requiring is become more and more higher level, and they are becoming more and more capable of doing longer more complex tasks as well as being able to find the information they need from other systems/tools (search, internet, docs, code etc...).

I think its that trend that really is the exciting part, not just its current capabilities.