A problem with the original subject for this thread is that we are only getting one side of the story and that is from people who are unhappy with a situation (and possibly have an axe to grind).
On the issue of the attitude of some managers when handling volunteers, yes there are bad or arrogant managers no doubt of it, but nowadays some things have to happen because the regularity authorities require it. Unfortunately there are those who, no matter how nicely they are managed, simply take the attitude that "nobody's telling me what to do" (an attitude that is sadly becoming more and more common) or it's "health and safety gone mad", so in the end management has to crack down and take the attitude of 'do it or else'.