Magnum, I haven't stepped foot into a KH in 2 years, so I don't have any up to date info, but it would appear to me that they are losing a lot of young ones who wish to pursue a career and don't have the time to get baptized or attend meetings. This religion has always had a strong pull on housewives, with children and the husband later joining in. But now it is becoming a religion for housewives here. Children are simply not coming in to replace the original boom of converts from the 60's, 70's and 80's who are starting to die off.
I remember sitting in an assembly one day a few years back (2013?) and the title of the talk was "overcome stumbling blocks' or something like that. A man was giving an experience of how he was disappointed with the new generation teaching so he stopped attending meetings. Later, an elder friend of his patiently explained how there could be an overlapping generation ( if you twist and convolute enough scriptures) and helped him to overcome his stumbling block and he became active again.
It was actually the first time I had heard of the 1914 generation teaching becoming an overlapping generation doctrine and I had a huge WTF moment sitting in the middle of that assembly hall. I was first shocked that the 1914 generation teaching had been done away with and I was equally shocked that someone could be stumbled by the new teaching. Well, the more research I did, the more I could understand why he was stumbled in the first place. Anyway, the experience at that assembly shows that there were those who were not convinced by the new generation teaching and walked away "stumbled".