After years of watching rangers point blank shot out of their own barrage, I'm convinced it's the only way to make your average ranger see the skill as a tactical utility rather than attack they should spam off cooldown. Note you don't find Ele's using gust, mesmers using temporal curtain, or engineers using air blast on their flamethrower off cooldown. Even after politely informing them of the fact that their #1 skill does more damage (unless they're standing at melee range with a longbow which is usually not the case) than point blank shot so it's a personal DPS loss, they continue to assume that since it's a "special" attack that deals damage that it MUST do more damage than their "autoattack" so they MUST use it off cooldown for maximum efficiency. They don't view it as a tactical utility that it's intended for. It's disruptive to group play in anything other than a break bar or by sheer luck (almost never used intentionally for this purpose), an interrupted skill.
I know it makes little sense to shoot someone in the face at point blank with an arrow and not do any damage, but at the same time, neither does something actively being pushed back by said arrow (no getting hit by an arrow or bullet does not send a person flying backwards like the movies.. their body's own muscles make them lose balance and fall down from blood loss).. so we can chalk it up to video game mechanics like most everything else, to keep the utility of the skill while not encouraging its use just for damage.
If necessary since PVP rangers would notice a drop in burst damage since they usually lead off with PBS and then rapid fire to make the target eat the whole thing while stunned, you could split the skill for PVP/WvW and just make the PVE version do 0 or at least so little damage that no ranger will opt to use it over long range shot for damage.