You're purposely choosing to highlight the extreme cases as a defence to Ten Hag's man management. They have chosen (incorrectly) to react to however they've been treated by Ten Hag in an extreme way. That's down to them and their personalities, not everyone makes the right choices.
Lets broaden the picture though, people you're forgetting to mention: Maguire, De Gea, McTomminay, Varane, Martial, Wan Bissaka, Bailley, Fred.
All these players have been dropped or targeted by the manager at some point during their time at United. Some spoke to the press while on international duty, some just shut up and got on with it and left in the end when they could, De Gea just left instead of signing a lesser contract and playing under Ten Hag again.
Before you make this out as me defending the players, I'm not. A lot of them either aren't good enough for United or didn't deserve to play anyway, which means they were in a position of weakness from the start so they couldn't complain like Sancho, Rashford or Ronaldo, because literally no one will take them anyway. They still deserve to be treated with respect however, otherwise the guys that you are playing and are relying on will turn on you at some point also, because they know one day they'll fall into that category.
ETH has been blamed here for the revolting ill-discipline of his players, an accusation which is not irrational but requires a response.
Let's do talk about Maguire. He got into trouble in Greece and has been shit ever since, with a noticeable upturn in form this season before he pulled his hamstring. There is nothing to pin on ETH for Maguire's downturn in form, which preceded his arrival last season. Point not well taken.
Let's do talk about De Gea. ETH downgraded the keeper position when he cast off De Gea for Onana. Point well taken.
Let's do talk about McTominay. I think we agree that selling Fred and keeping McTominay was madness. Point well taken.
Varane? Sorry, but Varane was outstanding for us last season. Not so this season, but he's been stricken with fitness issues this season but when he's been fit he's one of the first names on the team sheet. Point not well taken.
Martial? Martial was a disaster before ETH arrived and continues to be a disaster. We can't sell him and as I understand now we are not exercising the option on his contract. Point not well taken.
Wan Bissaka? AWB was a disappointment long before ETH arrived. True, we haven't tried to sell him but the club had higher priorities to addressed (which we've botched, which I'll get to shortly) but you can't hang AWB around ETH's neck. Point not well taken.
Bailly? We was gash for years before ETH and is now long gone. A really poor take if you're serious about blaming ETH for EB. Point not well taken.
Fred? Fred was an enigma long before ETH. On some days he was a force of nature and other days he was Foster Brooks in a United kit. He's gone now, but we kept the wrong halfof McFred. Point not well taken.
There is a serious case for the prosecution of ETH and I want to be clear that I am open to sacking him at season's end if both of the following are true: 1) we continue to muddle along as we have been this season AND 2) we have a top manager in hand ready to accept the job. But what I am not open to is sacking him right now, January 31. Why? Who the fukk would take over as interim manager? McClaren? Van der Gaag? Ragnick? Conte? Jose? I don't think so.