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That guy described as a "legal sage" what are his qualifications to talk about the internet? Of course he is entitled to his opinion, but why should we care about it? Because he wrote a book which expresses controversial views?
It's easy to be controversial, it's not so easy to add something valuable to public discourse. If we want the quality of that discourse to increase, then we have to stop paying attention to people who are controversial in favour of people who have insights.