That video just happened to be a hilarious setup for something that had been happening both by accident and on purpose since the game was new a year prior.
People did the same thing in the whelp caves on the Onyxia 'world boss' dragon 40-man raid. Run through and pop all the whelp eggs who would then swarm the healers or high-threat dps. It could be hilarious when it was intentional, or frustrating when someone was just being a dumbass and not paying attention or having situational awareness, heh.
I quit playing probably a decade ago or more, but it seems crazy to me, knowing the game is now 20 years old.