I'm facing the same issue displayed in that post. I have the exact same symbol in the upper left corner as well. The only difference is, that I do not want to open the youtube video in a native browser, but in a cordova/phonegap app.
My question now: Can I get it running by changing settings in cordova and disabling this restriction?
I hope somebody out there has a solution! Thank you in advance and if anything remained unclear please ask.
EDIT: I added the cordova.js to my external webpages and now the video is being display. BUT it directly skips to the end and shows other video suggestions. Any solutions for that?