Seriously man, you need to chill. He wasn't bad or anything. He got to play 15 minutes and didn't make too much of a fuss, positively or negatively. They didn't really use the flanks that much anyway.
i seem to occur to be the elia hater around here, although i do not even hate him. i just don't rate him.
i gotta add that i did only watch the netherlands game from the time he already was 5 minutes on the pitch (probably at 80 minutes into the game) and from that time he received the ball out on the left with only one opponent to beat, but he preferred to play a direct backpass [(meaning not diagonal but only backwards) to a player (probably their left back) who stood perhaps 8 metres away from him. that pass gained nothing and that showed that he had not much of confidence playing the passes that everybody blasted poulsen for.
after that he had a scene where he got played through on the left and played it back with a low pass but the defender cleared. don't know if he actually targeted someone with that pass from the goalline or he just tried to bring it in front of the goal with his obvious weaker left foot. then another scene where he got put through on goal receiving the ball in the penalty box with the chance to slot home, but his shot with terribly weak and pretty central so the keeper only had to move his hands to the right to deflect it away.
thats it... i read there was a good cross from elia right after he was introduced, but as i said i did not see that.
3 scenes: one he plays a backpass, the other he fails to find a teammate in the box with his pass and the other being clean on goal and failing to score with only the keeper to beat inside the penalty box.
looks to me like a player who you can use outside of the box to provide crosses, but wait he can't do that because his strong foot is the right. add the poor penalty box skills (i don't know if its lack of skills inside the box or just very poor decision making), but end result is that there is no end product...
so now you know how i perceived the game and why i am not looking forward to seeing to see this kid in a juve shirt.