I think the"internet apostates" help to undermine the control of the JWs. It will help stop new recruits. It will boost the courage of all the JWs that are having doubts. They will have fewer contributions.
I think this is already happeing. Now as far as "bringing down" the organization totally. I don't know. There's always going to be small, high-control religious groups. But I think the JWs will become a lot smaller.