Medical cover for events?

Why oh Why do people who organise events never check the qualifications of ppl who do the medics,even now im retired as a medic when I go to these events and ask to see thier certificates a lot say on the bottom its a certificate that they completed the course not a certificate of competence,one I found was carrying a Cardiac Defibrilator and didnt have a clue how to turn it on he was also carrying cannulas & drip sets,His excuse was he had them in case a Dr was present,It infuriates me these ppl are cowboys playing with ppls lives.An no one seems bothered till the S**t hits the fan.