That's because these guys submitted using a "Player card" which is meant for embedded video streams, then swapped out the content for their widget after getting

That's because these guys submitted using a "Player card" which is meant for embedded video streams, then swapped out the content for their widget after getting approved. A total bait-and-switch. Player cards are meant for online video players, not any sort of interactive virtual content. Twitter wants to keep experiences consistent across platforms -- for mobile, Player card users are supposed to provide direct links to media streams. The docs are fairly clear on this. This whole thing just stinks of media stunt.