I'm pretty sure Robbie is getting paid for the ads, of course. He may be "cashing in" on his fame, but that certainly doesn't make him a "sellout." I don't think he's betrayed any principle. He's a bioengineer, not a cardiologist. If my cousin says he takes Lipitor himself, I believe him. We have a family tendency towards elevated cholesterol. I take Lipitor myself, my internist prescribed it when another statin wasn't working (how come I can't get it for free?).
The first time I saw the Pfizer ad on TV, I was surprised. I wondered why a drug company would pick an inventor to promote a pill. Then I guessed the subtext of the ad might be: "Take this cholesterol reducing drug so you won't need to have artificial heart implanted." I guess that's kind of clever, because it seems sort of understated.
Now, I'm told there's a sequel--filmed at the Milwaukee Art Museum--but I still haven't seen it so I don't know what that's about. (For some reason, I doubt NPR will call the art museum a "sellout.")
Of course, I do like seeing my relative starring in a TV ad. Everyone knows that people watch commercials more than the shows. And it's not for Viagra or Ex-Lax or denture cream, or even Rogaine. I admit I'm biased, and that I got some calls from people that I had not heard from in a long time and having a cousin on TV raised my status, too.
But that doesn't give NPR the right to smear my relative as a sellout just for doing advertising. Especially since NPR runs ads all the time--for example: the digital download attacking my cousin included a plug for RealPlayer. Since NPR claims to be non-commercial, and Robbie doesn't (he has a commercial company called Jarvik Heart), I think that may make NPR the "sellout."