While you are correct, speaking negatively towards direct service probably isn't the best choice either. If everybody just donated cash instead of doing the work directly, there would be nobody to do the work. And if we start categorizing people by who is should make money vs. who should do the work, we are heading down a path of strengthening an unfair class system.
There are enough people who do nothing at all that when people want to offer service to others of any kind, I'd just say thank you for their service, no matter what it is or whether it is truly efficient.
There are plenty of unskilled volunteers. The waste was a Stanford education, an enormous investment by our culture and by her family, to get her to the point where she ... drove a truck and handed out meals. That was arguably wasteful, self-indulgent and small-minded.
There are enough people who do nothing at all that when people want to offer service to others of any kind, I'd just say thank you for their service, no matter what it is or whether it is truly efficient.