I think the main argument is that he deserved to start based on the performances he had this season. Whether he had the necessary qualities to cement his place in the team is something we don't and can't know because he simply wasn't given said chances. I remember the game against West Ham - very good passing, we controlled the game perfectly, he made some great killer passes... I said "this is the best midfield performance i've seen in a long time at this club." and really the only midfield performances in which the midfielder actually acts like one - looks for the ball, distributes it, initiates forward passing, etc. I said - this time he has to start the next game, there's no way he's benched again. Well, lo and behold, he is promptly benched.
I fail to see how McFred, let alone Matic, have showcased even remotely that they are better in midfield than him. Despite them being undroppable and having more match sharpness than Donny, at his worst he is just as bad as them, but at his best he is miles better. When was the last time we've controlled a game with the McFred duo? Even Norwich dominated us. Our midfield in every single match is non-existent and I'm not joking. If you put two cones in there, it wouldn't make much of a difference. I don't understand why some people are acting like Donny is being asked to replace Paul Scholes and Roy Keane in midfield.
Ole got the sack due to bad results... Rangnick isn't getting the shiniest results so far, whether we get top 4 is very debatable at this point and would rely on Spurs and Arsenal bottling it more than us doing anything. So...? I don't see how any of this is a glowing recommendation. Just because they are managers don't make them infallible, especially mediocre to bad managers. Even the GOAT manager that was SAF made plenty of mistakes, let alone people like Rangnick and fecking Ole (with all due respect of him as a player but not as a manager).