I think it's too quick of an experience to feel isolation. They do a survey, put on the set and do a scene where they can see a mirror where they are a 'woman' then they are put on a train platform to wait for a train to arrive, get on the train. Then take off the set, and do an exit survey.

In conjunction with a therapist I can imagine it being useful in some exposure therapies, but an unfortunate amount of the phrasing in the paper makes me think they're trying to pitch this as 'solo AI VR therapy is possible.'