There's a generational transformation going on as well.
The older ones in the congregation are too invested and too technophobic to learn anything other than what is in the WT.
These ones will take their dying breath while in allegiance to the WT (probably while on f.service).
The younger ones are technology and information hungry and very comfortable researching everything.
As time goes on and the older ones shuffle off their mortal coil, there will be fewer young ones filling the numbers.
We are already seeing a dearth of qualified men, and all new recruits are, by and large, young teen born-ins.
When there are a lot of young ones together there is peer pressure to stay in, but as the leaving and fading gathers momentum then that peer pressure reduces and the the leaving escalates.
This doesn't happen overnight, it doesn't happen in a year, but over the coming two to three decades there will be a natural attrition which will not be compensated for. This will be intensified every time the WT comes out with another wacky idea.
It's a slow process, but like the melting of the icecaps it has already started and is not easy to reverse.
Splash.