There’s also a major misconception at play as to what attorney-client privilege is. Primarily it’s a rule that applies to admissible evidence that protects legal advice, which kinds of admissions can be compelled and what kinds of evidence are admissible in court.

If I’m getting legal advice from my lawyer over the internet, I know that communication can’t be used in court against me. However if I really don’t want the facts I’m communicating to become known by parties antagonistic to my interests I’m going to take certain common sense precautions, such as strong encryption.