None of these are new criticisms. They're observed assessments based on a very, very long period of time by a large number of fans.
People genuinely aren't asking for the world. It's the whole "loves the club, bleeds red" juxtapositioned with the absurdity of "of course he didn't put in a shift, he was played slightly out of position"
His workrate as a player nosedived about three years ago and hasn't recovered. I think the adulation went to his head, personally and be lost that drive. He instead began to saunter around the pitch like Cantona at his mercurial peak; as if he'd made it and he just needed the rest of the team to catch up. This is why Ferguson used to talk about keeping young player's feet on the ground as this is what happens if you don't.
Every other player on the pitch will work harder than Rashford most weeks of the season. And yes that includes players who miraculously don't appear to have playing slightly out of position an insurmountable obstacle to running.
"I would have jumped for the header but I'm usually a left-sided centre back, but in this game I'm playing right-sided centre-back so it's understandable"
I don't get the disconnect between people who will peddle these excuses for him yet also claim he's somehow the heart, soul and epitome of Manchester United. He's the absolute furthest thing from it.
Boyhood club buuuut.... that's not normally the same patch of grass he likes to play on so Marcus isn't going to be feeling up to chasing back or closing down, and challenges for arial balls will be limited tonight. Marcus feels that he'd be more appreciated playing on the left so just to give you the heads-up he will be skulking around the pitch for large periods of the game.