Do not stand in the way of a person and their natural consequences.
The Law of Cause and Effect is an important lesson to learn.
Allowing someone to learn this lesson is more loving and respectful than attempting to buffer them from their natural consequence.
Self-determination means we value a person's right to make their own choices (cause) and be responsible for the consequences of those choices (effect).
The hands-off approach may feel cruel - like leaving a fool to their folly. That assumes that people are foolish versus acknowledging that people have agency (power, capacity).