well yes once you get to this high level then the awp is always trying to switch up his position so he can get a chance for an early pick and is trying to outstrat the enemy team to be at the bombsite that gets pushed more than 50% of the time before they show up.
if device is doing seemingly random things on the front line that get him picks without getting killed, and its always coordinated so his team can support him, and he's on the right side of the map most of the time, then you are watching astralis outplay the enemy team on 3 fronts without even firing any shots.
this means they are so well rehearsed on the map that they can execute a large number of setups with the awp in different positions and the support in different positions so everyone has to know all the flashes and smokes and be able to change position to accomodate the awp running around, not just every round but multiple times per round, with varying numbers of players being alive. theres a lot of variables there, that have to be accounted for so that the awp player can run around and focus on hitting his shots without worrying about getting prefired on the same position every round, or flanked or rushed down.
at this level it also becomes a bit harder for the awp because he will be in different positions all the time, so you need better preaim and map knowledge than if you just go to the same spot every round and preaim the same angle. but mostly it just comes down to consistency and accuracy, the high level awper who misses the least amount of opportunities is the most effective one.