"The brainwashing is too well done. In general, JW's can turn off feelings as well as logic better than anyone else."
Generally this is true. The majority of JWs will always go along with WT doctrines- no matter how illogical and untenable they may be.
However, from personal experience I've had lately I think there's a minority of JWs that are waking up amd are no longer willing to accept everything WT promotes. They are no longer willing to ignore reason and their conscience.
If there was freedom withing the Org. to express opinions and openly disagree with WT without punishment, I think you'd see a very different organization.
As it is, a JW cannot disagree with WT openly, even amongst friends, so the facade is that 100% of JWs have fully bought into the program. WT, I think, knows this- and that's why they have become even more hostile toward any dissent, doing research on the Internet, and associating with disfellowshipped relatives.
Fear is what keeps JWs in line- not logic- or, even agreement with/acceptance of, all the religion's opinions.