The case was overturned on appeal. As was pointed out, in many places you do not have an expectation of privacy when you are out in public. "Hidden camera" pranks, interviews and investigative reports are not uncommon in the USA and are rarely challenged in court because the law is on the side of the person filming in most of these cases. It's a fine line, a lot of these cases help to unmask some terrible people and behavior, but the flip side is the unnecessary and cruel humiliation of unsuspecting innocent people when a single moment defines their public persona.
If Evans does the interviews to demonstrate the approach that JWs are taught in regards to trying to reach people, or if it shows how sheltered their views and knowledge are, that can be very useful. If he's selecting clips to dishonestly promote a narrative, that can be destructive and dangerous, and is almost always unethical and wrong. I can't tell which it is, since I don't watch any of his videos anymore.