I'm partially in agreement with this perspective. In an ideal scenario, a club will have a clear vision for what kind of football it wants to play. It then lines up its managers and players to fit in with that vision, with the players and, to a lesser extent, the manager all being interchangeable without changing that vision. The DOF executes all of that.
Finding a manager is relatively easy, since there's a small pool of them at any given time. In this case I think ETH is a fine pick. Players are harder, since there's so many out there, and so many variables to consider. Bearing in mind ability, mindset, experience, chemistry, price, salary, their ambitions, availability and competition, it isnt as simple as filtering a spreadsheet from best to worst and starting at the top. There are thousands of players that we could buy, I don't expect the club to have this sorted out and come up with a clean plan of action so soon. This is something that needs a lot more behind - not least it needs the input of a manager who has worked with his players in the crucible of a real season.
What has worried me about this transfer window though is that they're below even the modest level of expectations that I had. I don't expect to have the full (ahem) cultural reboot completed yet, but I do expect the club to be able to provide a few decent bodies to supplement the squad where needed. It started ok, but stalled. The fact that we're barely 2 weeks to go, with most decent midfield and striking options already moved elsewhere, and we're still fishing round for overpriced unloved players like Rabiot or making total moonshots like Casemiro & Felix tells me they're making it up on the fly. They either had no interim plan, or it fell apart a long time ago.
I also think the Ronaldo situation has been handled terribly. Given that Ronaldo was never a good fit for ETH, and that Ronaldo could obviously make it impossible for us to keep him, it made sense for him to go early. We should have given the green light ages ago so that more clubs could weigh up a move, sort it out before the season started, and let us plan for his replacement.
I'm prepared to hold judgment on the long term stuff. We'd expect to see the first fruits of that next summer. But I think its fair to say that, unless he pulls a rabbit from the hat, he's bodged the first test, and that doesn't bode well for the harder job.