Each can decide, but it is the law. I did not have to enter or receive any information that is not already available to anyone with reasonable computer skills to obtain my FAA number and my FAA number is visible to everyone who may see my drone visually. Still it builds a user base and generates hits for public media forum posters, like YouTube channels for instance.
I understand concerns, but believe that anything except personal thoughts/opinions kept in one’s mind has now become “public” data.