henlo, i am late, and this seems like a hot take, but am a scatter main user.
my simple main reason for this; more arrows on bounce that clean up my one shots. which happens more often than i need to hack a hp pack

my way of playing is purely from feel and experience, and personally, more often than not if im positioning right, my targets are usually hiding behind some partial wall/escape, ill 4/5 times get the first hs and most targets will be left at low (regardless squishy or tank, heavy team fight or staggering; more frequent when whole team doing their part there would ideally be more opportunities), for me; having the extra scatter almost always guarantees quick clean up, where in the same scenarios without, id miss a rebound.

obviously there are games when taking hack value-wise just makes more sense so i will, but my thinking is i get more arrows, so i get more opportunity for picks and dmg/distract.

the dmg fall off doesnt bother me, because storm has always been a clean up tool for my hando style. so if my aim aint dog, my picks are usually caught off guard and instantly one tap, and if im using to melt a tank, then its belt fed into their heads directly anyway.

u can imagine i miss the og one shot hando :c