This is really excellent advice. I work in legislative affairs with lobbyists and lawyers. After 12 years working in DC with and for congress, I can say unequivocally there is absolutely nothing good that can come from voluntarily cooperating with the police. You should avoid them at all cost. Do not volunteer. Speak through your lawyer if you speak at all, and never allow yourself to get trapped. It's nice to think prosecutors won't go after small fish, but to them you are worth nothing, and they will hang you out to dry if it gets them even the most remote, minor, or inconsequential conviction.