The Athletic tried to make this point a couple of weeks back and I couldn't disagree more.
First of all, signing players doesn't suddenly make it the managers team, they take time to bed in.
Second of all, Malacia and Martinez are injured, Altay can't be considered integral to the team and will unlikely play any game of significance if we can help it. Antony has been out of the squad. Reguilon is an emergency signing, sam with Evans. Mount, Hojlund and Amrabat have barely had any time to bed in.
Thirdly, it presumes all the signings were his top choices which we know they weren't since he wanted Kane & De Jong.
Casemiro & Eriksen are quality but they are stop gap signings and already on the decline.
This is still a work in progress.
It's not that I disagree with your point, in general, it really isn't. I have made the point countless times that it could be months, or even multiple seasons, before it's genuinely ETHs team, in the sense that there's a 23 man squad of players all dancing to his tune.
Check my post history. See what I said about Arteta, and was proved spot on. See how I defended Jose, LvG and OGS to the hilt, with similar arguments, and with arguments about the management team generally.
The problem for ETH, in my mind, is two-fold.
One, he isn't working with Ed Woodward. We're not signing players based on their number of instragam followers, or based on their 'name' (Falcao, Schweinsteiger, Zlatan, Cavani, AdM etc...). It appears very much to me that ETH has had everything he could reasonably have expected delivered to him. A new CB. A new GK. A new CF. Multiple midfielders. Again, I'm not holding him to a standard of every single player having to he a roaring success, and overall I think he's bought fairly well...but there's no improvement (so far) where it matters...on the pitch.
Two. There's no evidence that the plan were supposedly working to under ETH is a viable one!
Name me a game, under ETH, in which we've played 'his' football and have controlled the game from start to finish and created multiple goalscoring opportunities? I can't think of many, at all. If any. Even under OGS we had prolonged periods of resoundingly good results and performances. ETHs results have largely been hard-fought, close victories, mixed in with resounding defeats, usually away from home.
Overall, there have been more disasters than really good performances, and overall the average performance has been pretty 'meh'.
So my question to you, and I mean it sincerely, by what point should we be seeing performances take shape? At what point do we acknowledge this team really shouldn't be resoundingly beaten four times on the spin by Brighton...or hit for sixes and sevens by anybody...or being completely incapable of beating anybody half decent away from OT?
EDIT | you say he wanted De Jong and Kane...sorry but we don't live in a fantasy world in which every manager gets every player they want...there's enough talent in the squad now to be doing better.