As is yours that Ten Hag set up not to defend from the front. Even if that's what's happened, it doesn't mean that it was intended.
More generally, that's an issue with a lot of the analysis after a failed game. People assume (at least implicitly) that everything that happened was intentional and therefore bad planning, but in reality, we usually don't know what the coach had wanted exactly (except when it gets explained afterwards). So when
@JPRouve talks about learning, we can't actually be sure what's been learned exactly. Maybe Ten Hag now knows that his approach didn't work against City. Or maybe it's that it can't be executed with these players. Or maybe rather that it can't be executed until players get more confident, and/or more experienced.
Obviously, everybody is free to assume and hypothesize as they wish; but it would make sense if posters were a bit less self-assured in their analyses of United's approach and its execution.