No, the question was not meant to criticize. I was just puzzled because the forum can be read by anyone. Lurk to your heart's content, and you don't need to be a registered user for that.
In my mind, one will go through the trouble of registering only because they have an urge to say something. Because of that understanding, I always try to approve a new registration as fast as I can. I'll pull over on the side of the road if needed to. But then most of these new registrations never return. And I don't think they are mostly bots because even when I try to approve fast, I do my extreme vetting and usually the information checks out fine. Occasionally, I can even find the real person.
As I said, it's just a mystery to me.