It’s simply a matter of supply and demand vs aesthetics. There’s a roughly “ideal” hairline zone for each person. Anything more aggressive is a waste of grafts and produces an uglier result and so is pointless. Anything less aggressive produces a less appealing result, but saves grafts. Saving grafts means you can achieve better aesthetics for overall density or for the crown, or to insure against future thinning.
Most of us will have to compromise somewhere, either in the hairline position, the crown, the overall density or all three. Or you can demand full density with a low hairline and end up having to use lots of body hair, which is a gamble and a compromise on naturalism.
Anything above a norwoood 4 requires compromise on the vast majority of patients, no two ways about it. Even a young Norwood 2 must either compromise or take a gamble on future thinning, which is its own form of compromise.
I think most of us would secretly want our juvenile hairlines back, but would rather have a more mature Norwood 2 or 3 look and have enough grafts to cover the crown