This is the equivalent of a priest insisting that people can't lead moral lives without the Church, who closes his eyes, plugs his ears, and loudly hums a hymn when secularists who lead moral lives raise their hands and ask to have a word.
They start, like everyone, interested in what they are interested in, and left only to that would pursue some very limited ends.
And who cares if they desire tests or not? They don’t desire salads either, but they’re good for them.