If I had mod points, they would be yours. This is very insightful.
Imagine being born deaf, blind, unable to smell, taste or feel. No stimuli, whatsoever.
What would it like to be a brain in a machine, fed with zero stimuli? Or stimuli that makes no sense? Could you even form a "self"? How could you even believe you exist?
I read in a study that used rat neurons to "train" a robot to dodge walls. I remember reading that any cell culture that had been given too much time to develop before being used for the robot was worthless. The neurons, without any stimuli, were in an "unusable" state. Perhaps jokingly, the authors referred to them as "insane".
Clearly, with zero stimuli, the brain would become useless. Making trivial connections everywhere, with no heuristic to determine the most valuable connections. That brain would absolutely be worthless for psychological study.