Right now is a pretty pivotal moment for his development to be fair, as proven by the likes of Januzaj, and we should be working towards getting the best out of him in his best position. I don't think I'm overreacting.
Every player develops differently, but him playing consistently is still developing him isn't it?
His game suits being able to run at defences, play intricate one-twos, run into space, dribbling to get into prime attacking positions etc. All of these things he's still able to nurture while playing on the wing.
It's obvious he knows how to shoot and where the back of the net is, he still needs to nuture the other aspects of his game. This time last year he was still playing as a winger.
Plus placing the burden on him being our main goal threat for the duration of the season could have a worse psychological effect on him long term, if he doesn't score goals consistently. That's a big if, but he's young a dip in form is bound to happen. There's absolutely no need to put that on him when there's someone with the confidence to carry that burden like Zlatan.
There's absolutely no need to rush, this isnt Fifa/Fm where you play wonder kids every game and they turn into world beaters in a season.