Experience with maggots is an important control variable, especially given the tiny sample size (13 people ground maggots).

I suspect that people who have experience dealing with a maggot infestation -- or any infestation -- will have a very different relationship to grinding maggots.

I wouldn't think twice about grinding maggots, but to do so voluntarily I'd have to have nothing better to do because it's not pleasant work.

I don't think grinding maggots is particularly violent. This is probably because I had to deal with a very serious and persistent maggot infestation. There's really no way to deal with a maggot infestation except to kill them en masse using methods that appear sadistic (e.g., boiling water or chemical treatment).

An alternative title might be "Dealing with a maggot infestation is necessary but unpleasant work... you have to be pretty bored before you decide to do this work voluntarily."