shamans
Thinks you can get an STD from flirting.
Total nonsense.
Iniesta's short passing is really good; Xavi's short passing was really good; Scholes' short passing was really good... Hell I could name 7-8 player's in the United squad which you could classify as anything from decent to good. Fellaini wouldn't be one of them. Unless our standards have lowered to such a level where Fellaini's short passing is really good, Rooney's short passing is likewise and Rojo's defending is really solid.
I've watched him many times for Everton and over 80 times for United. His game is based around the fact that he's a massive nuisance to defenders and can control the ball from nearly 6 feet in the air with his chest, which is particularly useful in a system where you're looking to bypass midfield (usually a tactic employed by a smaller team, particularly when they're not favourite to win). These along with his defensive heading and physicality are his strengths. His weaknesses include his discipline, short passing, long passing, close control, technique, ball control, pace, stamina, concentration, positional play, an inability to keep the ball when pressed and strangely enough given his height: attacking headers.
In short he has no qualities apart from his size that suit him playing in the middle third of the pitch.
Those players don't just have good short passing -- their short passing is world class. Fellaini's short passing is as good as say Cleverley's or any other average top 8 premier league midfielder. You said he has very poor short passing which just proves you haven't seen enough of him.
Fellaini has other weaknesses, and you mentioned some of them which I agree with but the last part of your post just proves you don't see what he brings to the team. Especially If you think he has no qualities apart from his size. That's ridiculous.
Because of his size, many have just made this image of Fellaini being a useless lump with no strengths but his size. To anyone who believe this myth, why don't you just watch the goals he has scored and the manner in which he has scored them let alone analyzing his whole game.