The JW church has grown through aggressive proselytism/marketing and resisted schisms through hierarchically directed aggressive shunning, this has resulted in the demographics you seem to be lauding.
Exactly my belief. I call it "Avon" marketing. I don't like Avon. But if a coworker brings we a catalog, I look through it and would always buy a mascara or lipstick or whatever even though I don't really need it. Same with the active proselytizing for all those years, and especially 70's, 80's and 90's. There is no way the current activity, dying/exiting of millions, and attendance support any growth whatsoever. D2D is not what it used to be, and the privileged can stand by their carts for hours with 0 results. Parking lots half full and regional attendance a fraction of what they were...do the math.
WBTS have lied all along about their numbers, ask any secretary who reported numbers. They will obfuscate anyone and anything for the preservation of the corporation. They know they what the future holds, and investments will go along way to keep the corporation alive.