I don't think popcorn time will ever reward seeders for their bandwitdh. Why paying for something while people will do it for free.
If there will be a killer app for Bitcoin in the future, it will definitely not look like popcorn time.
You're right it's not likely to work when people already do it for free. Plus I doubt Popcorn Time can legally operate as a for profit business anyway.
Also, I don't think the author of the article meant it literally. I believe it was more about highlighting how the stupidly simple and user friendly idea of Popcorn Time completely masks the fact that it's based on Bittorrent. Similar to Bitcoin, Bittorrent was still not something that the every day person was likely to bother with. It was still (as pathetic as that seems) too complicated for most people. With Popcorn Time, Bittorrent might finally be used by the mainstream and they'll be completely oblivious to it. That's what Bitcoin needs!