Yeah, he's able to adequately push. I don't like when he does it, though (it's usually a sign that he's nervous). He can get by doing it against lesser players who are more prone to errors. But if he wants to win against the top, true elite regularly in the future, he has to end points quickly and not try to out-rally guys like Djokovic, Federer, Murray, and Ferrer. He did that pretty well with his attacks today against Andy.
this is true in essence. but it leads to a kind of confidence crisis that leads a player like Milos into errors. he tries to hit a winner where there isn't one available (he's out of position, or the margin is too small). "Oh my God, I'm in a rally!!
I have to end it right away!!!
" That's not a healthy mindset.
It's good to be able to construct a point, and to have the confidence to hit a few "pushing" shots back until you get the shot you want, on which you can unload.
In principle, yes, he should end the points early, and not seek to play long points. But he mustn't give off the impression that he's "afraid" of rallies.