The main problem of today's game, the midfield, has nothing to do with Amorim and everything to do with how terribly we have been run and managed in recent times.
For a club the size of Manchester United, we have only one defence-minded midfielder capable of winning duels.
There were players out there over the summer who we could have signed as midfield cover but no let's put our faith in a few 30+ has beens who can't chase and harry. You just can't make it up.
Hopefully Amorim can grind out results for now at least before he can implement his vision, but we can't expect anything to change overnight when we analyze what he's been left with. Admittedly, not having Mainoo, Yoro, and Mount, will also count for a lot, as those players will definitely add to what we saw today.
Key for me is whether he will be able to get anyone in when the window opens again, like Ederson, Gyokeres, Grimaldo, etc, who would fit his system perfectly.