I can sure you that it is not BS or a fantasy by firsthand experience.
As I mentioned before, I participated in several Honda case studies. After a couple of days returning from one posted a very vague thread regarding my experience carefully not to disclose any specifics of the item that I got to review. I also posted a picture of my bike in front of some shipping containers with Honda pennant flags draped on them at their remote test facility in the desert. I used extreme caution not to show anything else that could be used to identify the location of this facility.
Within a few hours, I received a phone call from the North American Honda Headquarters Legal Department regarding my post. They explained to me that I was in violation of the NDA that I signed and agreed to, which I did not receive a copy of for later review. A few hours later, I received a call from the General Counsel there at Honda. It sounded like the call was with a room full of people. He read me the riot act and said that they were considering pursuing for damages if I did not cooperate to remedy this issue. I said that I would do what to could do and fully cooperate to the best of my abilities. I was instructed to have the thread removed from the forum where it was posted and to contact the administrator of the forum to get that done immediately. Then not to post anything on the forum for 90 days. A few days later I received a letter on Honda's Letterhead signed by the General Counsel himself reiterating what was discussed over the phone.
I can tell you that I could have lost everything that I owned over that "Vague" post. The one in question here is a bit more specific.
Honda does take these things very seriously. However, they do not provide copies of these important documents to the people who are signing them, which is bad on their part. I have a few friends that work at Honda in Torrance, CA and they also had to sign an NDA and sworn to a higher level of secrecy as part of their employment with North American Honda.