Form 3s are filed by insiders of the company as a registration piece. They are stating that providing all the answers to said questions would make some an insider which would have to be registered with the SEC.
I am also happy that they put those out there because I would far rather have a company aire on the side of overfishing with the SEC over underfiling.
No but they help the SEC track anything funny by the one that knows the inside info. The SEC does not care who knows they just want to keep abreast of anything that might not be kosher.