I don't think activism really works. Put the info out there and let people come to it of their own accord. Trying to 'bring down' the WTS is never going to work.
Strong JWs will never read 'apostate' literature, watch 'apostate' videos. or chat to them outside a convention. I'm fully out mentally and I recognised some (from their youtube videos), waiting outside the convention. Even I didn't have the nerve to engage them, as I was with friends.
I think they are all stepping stones. A JW begins to have doubts, maybe over many years that he forces down or to the back of his mind. Then one day there is just one too many. This happened to me...
The 'overlapping generation' was that one too many. However for a year and a half after hearing it, I kept it to the back of my mind. I still wouldn't look at anything 'apostate' on the internet. What I did look at was Wikipedia. I found out about Ray Franz, my curiosity was piqued. 'There won't be any harm in reading his book' I thought, 'no one need know'. I couldn't get it through the post for fear of being discovered but I found a pdf. I read it and the rest is history. After that I had no problem reading JWfacts. I found JWstruggle and became friends with JJ...Eric (RayPublisher on here). Found a few more friends, found this place and started posting. I've watched many youtube videos, some I find thought provoking, others just seem to be a rant, which just turns me off completely. To my mind, the most effective are the ones done with respect, intelligence and thought.
The ones whose attention needs to be grabbed are not the hard line dyed-in-the-wool JWs, but the ones with doubts who are looking for answers. The gentler the approach, the more effectiveness it will have.