Morata has never been an incredible scorer in his career. In terms of this aspect he is overrated. However he can still be supportive on attacks in an effective way. But I don't know playing as the centre-forward at Milan would be good for him. Pioli uses a 4-2-3-1 formation most of the time. I think Morata shouldn't be the only player on the front to be relied upon.
He can be more effective when he has a companion beside him. I wonder if Pioli has such plans to make a change. Because I don't remember him using a formation with two strikers. But if you have Morata in your team it is better to adopt such formation just as Atletico Madrid have done.
Morata was once the lone striker in the Spanish national team and that went well in my opinion, in terms of quality Morata is a player who is quite agile in his movements and takes up empty space.
I think Morata won't be a problem if he gets good support from the flanks or in the middle to score goals, Morata is the type of player who can be an executioner and can also be a good feeder for his teammates, for a striker he's not selfish and that's very good for the team.
It depends on how the coach wants the scheme to be, Morata could be the lone striker or there are other players who will accompany him in the opponent's defense. But if you compare with the game when he was in Spain it seems less sure because the color of their game is different, while here in Serie A is famous for its tough defense so it will be more difficult to penetrate the opponent's defense. However, the scheme that occurs can change under certain circumstances and see from the opponent they will face what kind of strength.
In terms of the player's ability, he's good and I agree with what you said, although maybe he's not a striker who is hungry for goals, but his movement to provide space for other players is good. But I also believe it's according to the needs of the coach later.
So, is it true that next season Morata will play at Milan? Because it seems that so far Morata is still part of Atletico. But yes, regarding Morata performance indeed, at least i also have the view that Morata is not a player who can be relied upon to score many goals. Because after all, it looks like Morata might only be intended to be bait or trick the opponent's defense line. Because in that way, Morata can open space for his teammates to score goals. But even so, that doesn't mean Morata can't score goals, because as a striker of course, the main thing is to have the good skills to score goals.