You can't shine the torch everytime on Lukaku's scoring streak to justify Kone's position in the team - half the time he's not even in the picture. I've argued the past three weeks that Kone needs to be out and each time I hear the same reasons why he should stay and come Saturday he stinks the place out, we dont win, yet Lukaku scores so somehow its all ok. He's poor form has contributed to our lack of points in the last month
I'm arguing exactly what
@orly just said.
Lukaku plays better as part of a front two. Kone is the best option in the club presently to play that support role alongside Lukaku. Modern defences, as we know more than most, have difficulty in adapting to two central attackers as it leaves the two central defenders in a one on one situation. For years with teams playing 4-5-1, being a central defender was relatively easy. One went tight to the sole attacker and the other dropped off as cover. You can't do that when you have two central attackers (classic case was Leicester's second goal where in the build up to the penalty Stones, good as he is, was left one on one with Vardy who just drifted behind him). Whilst Everton do not operate Lukaku and Kone in exactly the same way, Kone's presence gives Lukaku more space and stops central defenders from covering the other when he is in possession.
I'd prefer an alternative partner to Lukaku, but Kone is the best option in the club, and if his contribution is to make like easier for Lukaku then so be it.