I think the reason why GB 2.0 seems so stupid compared to the prior GB is that the prior members of the GB were brought up in an organization that gave some leeway to those in the organization to form their own opinions and discuss them. Those that joined JWs after disfellowshipping and other changes were instituted that restricted free thinking have been severely mentally handicapped. We're seeing the result of this now.
GB 2.0 is not college educated and has not been able to freely discuss doctrine nor think for themselves their entire JW life. This obviously has a profound effect on their mental capacity. I know that since waking up I have also noticed how my thinking ability was handicapped and not just in all things JW.