To an extent, but if the last two seasons have shown anything, it's that it doesn't matter how good the players you've got are if the manager can't get them to perform.
I'm looking at it this way -- we aren't being linked seriously with anyone incompetent (except maybe Mancini). Given a good batch of players, any of Koeman, Emery, Pellegrini, de Boer, or even (gasp) M---- will improve our league position. This gives Monchi time to overhaul the scouting network and the entire recruitment side of the club, which will give us a long-term advantage over most of our rivals.
I think Moshiri is playing the long game here. One managerial appointment plus one summer shopping spree is unlikely to set Everton up for long-term success. He's trying to get the best manager available but I think he knows that it's more important to the future of the club to make sure that everything runs well behind the scenes. An opportunity to make a play for one of the world's finest sporting directors has just fallen into his lap and he'd be a fool not to do everything in his power to bring him here.
Maybe this is just me hoping but none of the noises from Moshiri's corner have suggested any sort of short-termism in his thinking. He must know that bringing in a top sporting director like Monchi will give us a competitive edge for as long as we can keep him at the club (which is probably much longer than the average managerial appointment).