I think this is the difference between having your dream job, and your dream resume. The former is important and the latter is pretty meaningless. I got the opportunity to work at one of my "dream companies" and it was not the greatest experience.

But I was working at one of those companies that I really wanted to work at. I wasn't doing the job that I really wanted to do. That's a huge difference. Having a good job, at a company that may not be your dream company, is better than having a shit job at the coolest place in the world for sure.