Not sure, I think the finish was sort of comparable to Milan's win on Stage 7 of Tirreno-Adriatico (with the difference that one was flat, the other at 5%). In both, the lead out man 'escaped' and got a nice advantage. Milan won because Consonni was there to drag it back, Pogacar didn't have that rider and it probably would've been too much, even for him, to chase Schultz down solo.
He should've gone earlier, but I don't think there is too much to read into it either for UAE or Pogacar – it's an unusual type of finish, somewhere between a false flat and hill, and they don't come about too often with a sizeable peloton. Neither UAE nor Pogacar played it particularly well but it happens, probably lacked a bit of touch/racecraft but, like I said, unusual finish that isn't replicated much in major races. Learning experience, really.