From my perspective it isn't so much that designers are now "rock stars" (whatever that may be), but that more and more organisations are finally figuring out that their skills involve a lot more than just making something look pretty.

You'll be amazed at the number of people who still have that opinion. Hell - look at one of the subheadings used in the article "SCOUTING FOR ARTISTS" - designer != art!

The other big issue is just the raw numbers. There are dramatically fewer designers out there than developers - especially those who have a cross-section of the skills that the average startup is looking for. It's a good time to be a design generalist.

In fact, now that I think about it, some of the problems is that organisations still have that view of "the designer". Hiring that single person who is going to solve all of their problems. Companies that wouldn't hesitate to hire a DBA, a back-end dev and a front-end dev don't understand that they should be hiring a visual designer and an interaction designer (or whatever).