Priming the Pump
Remember when the first Caleb video came out? JWs who were shown it while they didn’t expect it usually thought it was a spoof or a mocking video. It didn’t get any one I know to leave, but they couldn’t ever unfeel their instinct to doubt it. And to THINK about what they are being taught. I think priming the pump about changes is a great idea to make their brain stop for a minute about a topic they are justifying and defending and that there is suddenly a new bible teaching to take in and spit out.
I have spoken to a few ex-JWs this last year, and one common thing I heard from them was "something someone said stuck in my head.... and then I heard another.... and then..'
When the final straw fell, and the weight of the evidence added up, they were grateful for that first person, and the second, as now they are glad to be awake. They do not want to support such a greedy, unloving, user borganiztion.