I'm not arguing that Crouse was the value in that deal so I'm not sure what you're trying to prove there. You did not, and still have not, demonstrated that it is just Crouse's draft position that gives him value. The value on him is determined by 1) what he has done in junior, regardless of his draft position, and 2) what scouts reasonably think of his potential. Both of those evaluations can be entirely done without draft position in the equation. No scout is going to look at Crouse, not like his junior numbers, not like the potential he sees, and say, 'well, he was drafted high so he must be good and have good value.'
That is precisely what you are arguing is going on if you're arguing that it is draft position that gave Crouse his value to Arizona that he otherwise would not have had, if he had been drafted later. If you're arguing something else, then it has absolutely nothing to do with draft position giving a player more or less value a year+ after being drafted - which means you're arguing something else entirely.
What it seems you're trying to argue now is that draft position is the sum of how teams value players, and that somehow the indicator of that sum (draft position) is going to keep mattering after the draft - and that thus players drafted lower are going to have to prove more, comparatively, to raise their value, because their initial indicator of how teams valued them was lower. What I don't get is why you're assuming teams are going to keep holding onto that initial indicator of value (draft position) years afterward. Draft position is a benchmark, at that one moment in time, of how they were valued...after that it is going to incessantly be in a flux as teams constantly have an entire department to evaluate these kids. A year later, two years later, that one single benchmark isn't going to matter much anymore, since teams have created far more recent, updated, benchmarks of value. You're basically grabbing one little snapshot in time and assuming the projections then are going to keep on holding value.