Yes, I'm aware about the inventor's story. I didn't said it was NASA's engine also. I think in the end the inventor will get credit. For years, the inventor of the reaction engine, Henri Coanda, a Romanian, didn't get credit for his invention, but eventually history made justice.
What's important is that the EM Drive engine will enable planet travel, if it's proven to be viable, of course. That's huge, IMHO.
I'm just happy to see some new advances, I kinda hope musk/spaceX does their own version :)