It would be more difficult to control a more sophisticated system, not easier.
As far as using the technology enslave the mind, they already are. That's why they're trying to keep the social hierarchy, that's why their banning scientific research through the government, slashing R&D funding through the oil companies, and that is why they, in fact, do not want a techno-utopian techo-progressive society.
All though your waking rational side couldn't be brainwashed without obvious and directly terminal implications, your subconscious, animal side, can be altered directly through its neural neural network as electrical signals within nanites generate stimuli to certain areas of the brain, changing it to match the projected opinions one's remote viewer, a "brain operative" of the shadow government.
If a person that you need to help you doesn't like you, there is a good chance that it's because a brain operative is acting under the order to sabotage your efforts to achieve a goal that might be conflicting to the shadow government's interests. That's why we must value our logical, rational thoughts more than our inward feelings and intuition.
Because personality is the product of intrinsic motivations redirected from their original purpose to adapt to its environment, our rational thoughts can become our inward desires, through harnessing emotions, for better regulation and control when its in our best interest to befriend someone that we're repelled by (because someone else is in us, making us repelled).