Please correct me if I am wrong-
Aren't most congregations kept at about 144 people or so? One kh may have 2 or more congregations. It is not that difficult to keep track of 140 some people and if they are baptized or not! Especially when they see each other at least 3 times a week, mid week meeting, Sat fs, Sunday meetings. In any given cong there cannot be that many eligible new converts for baptism! If they are the kids of long time jw's they would certainly be known and knowing the gossip mills that kh's are, everybody would know if someone was getting baptized at a dc or where-ever.
I call b.s. on the comment that they have no idea.