Yes, but they still were incompetent and had poor enough handling that a stampede occurred causing deaths instead of just dealing with them. If you run a lot of events where drugs, alcohol and crowds are common over a long enough period of time injuries and deaths become normal things you plan in advance for.

A one off event of someone overdosing doesn’t stop an entire festival, but it does shut down areas, emts get dispatched and the person is brought to medical where they are transported to a hospital based on symptoms.

What made this special is their incompetence and probably greed and cost cutting when it came to handling crowd dynamics actually killed people.