It does appear that the majority of the target audience these organizers must have in mind are those who wouldn't care two bits what professionals have to say. However I suppose it's better to be optimistic and think that even if they manage to change the lifestyle of a few self destructive individuals it will not be invain. Specially if he/she is a in an influential position.
I also believe they should have a catch em young attitude and aim to go speak to as much youngsters as they can.School kids, teenagers,etc.Many times,innocent and easily influenced and devoid of all that grown up know it all arrogance, they may respond better than their elders.And changing them will be changing generations to come.