Well Sloane went undrafted in his first eligible year and then slid to pick 44 the following year. Recruiters must have seen a lot of limitations or negatives.They don't just let him take it, but they don't put players and structures in place to stop him from taking it either. They try to win the ball first, if they can't, then they're happiest for Matt Crouch to have it, because he does nothing damaging with it. Tags and blocks are targeted at the players who are damaging when they win it, such as Sloane and Brad, and a couple years ago Thompson and Dangerfield.
Empty accumulator was the knock on him as an under 18, and that hasn't changed a single bit at AFL level, which is why it's important to know and understand what limitations or negatives recruiters saw in the new lot of draftees. Some things can be fixed with coaching, others can't.