I think so. VR could serve as a safe place for them to unleash their thoughts and aggressions without harming others or themselves. And who knows? The escape might even serve as rehabilitation for them.
This. It may be a good way to relieve one`s emotions and stress, nothing wrong with it.
As for the wish to unleash aggression that may cause hurting other people, I believe it`s too close to a medical condition and should be treated by a specialist.