The can being launched downrange is most likely the fault of the owner.
Not allowing the can to be immediately retrieved, and the subsequent damaged caused by dumbass range patrons shooting at it, is the fault of the range (employees, management, and ownership).
These aren't mutually exclusive errors, nor are they the same level of head-slapping disbelief.
Launching the can doesn't necessarily damage it, but the range not IMMEDIATELY calling a ceasefire and allowing the owner to retrieve the item before their customers take potshots at it is willful malfeasance devoid of any and all common sense and completely worthy of scorn, in my humble non-barrister opinion. This would be true if it were a can, or a chronograph, or whatever.
I am still trying to wrap my head around the numbskulls on the line shooting towards the floor at personal property. That just twists my head up.
Now, as you say, if the range had gone cold said numbskulls would not have had the opportunity to act childish and destroy the mans can.
Very glad I was not on the line when this transpired. It is very difficult to argue with stupid. They have limitless amounts of ammo for such fights.
That this went Viral is the world we live in. People need to realize that what you post never goes away. Firearm related incidents are prime targets.
No Pun intended.