Completely agree, can you imagine Roy Keane, Scholes, Butt, hell even a Neville acting like that so soon before our biggest game of the season? I certainly can't as they'd be mentally focused on the match, not lying on the ground taking "selfies" like children. I can imagine a real captain having a word with the young players acting like that too, telling them not to be distracted.
The fact that these videos were uploaded before kick off infuriates me, who the hell is more concerned with social media than the match we're about to play? If they can't focus on the match they're about to play then ban phones from the team bus, dressing room etc. If they're going to act like children then treat them like children.