Because it’s seen as soft and vain and a bit gay. For a lot of those footballers having your picture taken etc. was only something soft singers and actors did (usually female as well), not hard man footballers that liked a pint before the game.
Can you imagine razor or Ben thatcher or Keane or whoever posting on social media about their cool new hairdo or “dabbing” or whatever? Shearer and co. can’t relate to it at all because it’s a generational thing. In a way I completely get it though, I hate social media and I can see why people think the players are insincere and don’t care if they’ve just lost the NLD but are still posting selfies smiling and promotions their newest FIFA fut card or whatever . Or hanging out with some grade a premium 100% YouTube Cunt.
I do wish sometimes football hadn’t been taken over by social media so much in that sense. I hate how every footballer has a fucking brand now and their own line of designer clothing etc. Just play the game and win the games you narcissistic wankers.