Yes, in the sense that you have a legal doctor-patient privilege that binds what they can share with whom. There's not really an Apple cloud user privilege.
No, in the sense that your therapist is still required to report you to the police in various situations where you pose an immediate threat to yourself or others, etc.
> No, in the sense that your therapist is still required to report you to the police in various situations where you pose an immediate threat to yourself or others, etc.
And therapists are legally mandated to report you if you told them you viewed or possessed CSAM.
A better analogy is a storage locker. AFAIK police need a warrant to search "your" storage locker even though it's on someone else's property. I don't see why data in the cloud should be any different. Pre-emptively scanning everyone's data is equivalent to officers rummaging through all the storage lockers in a facility "just in case" they find something illegal.