I agreed with you until you turned the conversation toward the Glazer's ambitions. Doing that ignores that the Glazers still fund the second-highest net transfer spend in the league.
If someone wanted to rewire our team around different players + strategy, there has been ample money and a willingness to do that. And I think EtH did want to do that, which is why he went so hard after FdJ, but it didn't work out because FdJ didn't want it and EtH didn't have a good backup plan. So he shored up our midfield with Casemiro and, as you say, looked to play to our strength - Bruno & Rashford on the counter.
This summer, encouraged by last season's results, he doubled down on making us the best transition team: Rashford's new contract, Fernandes made captain, adding Hojlund for more pace, Amrabat (to back up Casemiro), Mount (to back up Eriksen, strangely). But it's not working so far. We're a one-dimensional threat that hasn't added a ball-player capable of breaking down a low block - which gets much more exposed when our best ball-players are injured or can't play full games (Martinez, Shaw, Eriksen).
This could have gone differently. EtH could have decided last season's results were a lucky fluke: Rashford was unlikely to repeat his form and Fernandes is limited in possession. But I think it's extremely hard to blame him for that. If you were a manager who reached two cup finals and a decent league result in your first season, would you completely change the strategy that got you there? I don't think so. So he tried to make some limited upgrades on the same strategy, but it's backfired.
Maybe some injury recoveries and a little luck will save our season and EtH's job. If that happens, I think he will have learned a lesson here. I expect his transfer policy next summer will be to move us sharply away from reliance on Rashford + Bruno, and toward stronger possession players.