If we had one wing-back who could overlap consistently and produce accurate crosses, or more than one centre back comfortable in possession (and by possession, I mean quick passing possession), or central midfielders who could pass through the lines, or well rounded strikers for the lone role.
I do not disagree that we need that hunger, that's clear. But we do not have the athleticism or the technicality required for the level we aim for, nor the level below. And when Amorim is talking about this team being in the last few years a counter attacking team he is absolutely right. And this is what he wants to change. So it's not about changing from a 4231 to a 343/523, but changing a counter attacking team that cannot hold onto possession in the final third with enough tempo to bother oppositions to a team that can actually play progressive football and is comfortable in possession all over the pitch and has the pace and power to compete properly for every inch on the pitch. Hunger is part of that, but ability is also a prerequisite
We have two midfielders, two. I don't count Eriksen or Casemiro. And they both look gassed. We all knew last summer that it was beyond stupid not to address the lack of numbers there. We have one young striker and another attacker who cannot really be positionally defined. We've got 4 wide attackers, one has adapted really well, one is a lazy and entitled on his way out, one is our worst transfer ever and the fourth is struggling to adapt to playing more centrally, more suited to counter attack like the lazy one. There are so many issues with this team playing a more up tempo passing game cutting teams open. We don't even have the centre backs to properly push up as there's so little recovery pace, and only Martinez can pass through the lines.
It's the lack of training/preparation, lack of ability, and the mentality you mentioned.