I don't believe the squad is good overall, and it's certainly not Amorim's squad. So, i'm willing to cut him some slack until he figures it out. More so, if he keeps trying to get his message through to the players and implement his system, instead of giving in to the need to get temporary good results to "salvage" the season. We've been there under both Solskjaer and ETH, it's a road that leads to nowhere in this age of over-coached sides.
Having said that, the strife for positivity turning into the "cult of the manager" is a real thing on here. For the most part, you are correct about yesterday. We finished the game with 10 touches in the opposition box. Until Dalot's shot, late in the first half, we had two touches in their box: A backward pass from Hojlund and a blocked cross from Garnacho, both on the edge of the box and (harmlessly) wide. If that's a "good" first half performance, i don't (want to) know what a bad one looks like. You don't expect to see a plethora of touches between the lines, either, but our map was a barren wasteland. But, apparently, scoring from corners is small-time for a "big" club. All in all, your eyes didn't deceive you.
The first half, for me, was more strange than good. I believe Arteta expected Amad and Rashford to start in counter-attacking tactics, with Zirkzee looking for pockets of space between the lines. They never overcommitted to the high press, and Rice was being very cautious with his movement/passes. I don't know why Arsenal didn't change their tactics during the half. A guess would be that Amorim is still an unknown quantity to the opposition, who wait to see how he will approach the particularities of the English game. We were in a relatively good position because Arsenal (who are years into Arteta's project) were refusing to call our "bluff". It was a false sense of control because, after the half-time talk, Arsenal took the initiative, stepped up a gear, and you could see their goal coming. And when it finally came, we never showed that we could move up a few gears ourselves. But it's still early days. If, by this time next season, we are still producing these types of performances, then we should be concerned. But it was always going to be a bumpy ride.