Yeah, I agree and hope you're right and that there's no deterioration. However, although his privacy has to be respected, I don't fully understand why she can't be more open about his condition. Whether he's stable, improving or getting worse, why won't she say?
That's very optimistic, but more likely you accidentally omitted the 'not'
I can only assume based on my own experience but if it is like I imagine I can understand the desire to protect him if he is a drooling shadow of his former self on a very long road to recovery.
Can't see him returning to F1 but I know someone who got back on a motorbike ~25 years after a similar kind of accident in terms of injuries.