I think you have summarised David Clake jrI coached some very , very fast athletes at Year 12 level but few were fast on the field with the footy. They seldom took possession and took advantage of their speed.
On the other hand I had a kid who was slightly slower athletically but he was incredibly fast with the footy - because he had footy nous and would take possession with momentum and speed at exactly the right time. That's very hard to coach into a player as you can do all the drills you want but the ones that get it do so more innately.
I hope Max can match his athleticism with natural footy nous , that could really be something