Whenever JWs make claims like this I get the impression that they are trying to convince themselves that a mass "crawling back" is occurring because that feels better that a mass "fading away" which would be the more likely scenario.
When I was still in and going to meetings the elephant in the room for our cong (and surrounding) was that were several people "drifting away" "slowing down" in the ministry and the meetings this was ignored while we all banged on about the amount of "interest" (non existant) there was and "how exciting" (not) the times were etc etc.
What deludinoids!