with a clear bias against EDM. whacked-out ravers, weird acid trips, lol. what if it was some completely sober drug dealers who thought it would be funny to get animals high? raver is now synonymous with degenerate for some media outlets.
This raises so many questions, like whether dolphins would do better on acid, or who exactly considered a dubstep heavy event to be a possible strain for animals with "sonar hearing," more than say, a thunderstorm, and also whether in fact the dolphins killed and ate a few of the thousands of whacked out ravers after taking a heroin substitute on their own time.
Also, the source article they link to says that a court blamed the zoo vets and rejected the raver theory.