Well, for whatever it is worth, God changes our will, and so, in a sense, our minds, when we are born again. Call it brainwashing or anything else you like, it is not as though he doesn't have the right to do so, nor even that he has no right to make us a different person for his own use. It seems to me that your assessment is that he doesn't respect us as "what we originally are", when to me there is no reason for us to be respected as such.
The soul is what remains when this husk is shed; the mind, perhaps, just a tool. I don't know how to say just what is what, because in my opinion even this very body is remade glorified, not just discarded. I see no reason to have to understand how this works to know that what is really US remains.
As for the relationship of this question to the GWT, I doubt any of our concepts or imaginations do justice to what will happen there. But I have no doubt our souls, and consciousness will be there. What you want to claim is or is not necessary, you have no way of even knowing what it is. Just a partially-formed concept.
God doesn't do anything in vain.
and if we were all just brainwashed to agree without question like robots?
The GWTJ would be vanity.
It would serve no purpose.
God already made the decision on these people before any of us were created.
But if God actually values us as more than just robots?
then it serves purpose.and is done for us to understand His judgements.
Does God have the right to make us robots if He wishes?
Sure.
God doesn't have to provide salvation or anything for us, He owes us nothing.
But if God actually did that. God could only be considered good in the "might makes right" way.
But rather, God is not just good because He has power, but He is good by human reckoning as well, and just, by human reckoning as well. God still acts in a way that when we know all the information, we'd say "He's right" and for more than just "He created us He can do whatever He wants"
Jesus exemplified that. showing that in our flesh, God exhibited all of the best human qualities, compassion, mercy, courage, resolve, justice, wisdom, patience, forgiveness. Every thing that you admire other people for doing, Jesus displayed it in His earthly ministry.
He COULD be an all powerful tyrant
But He isn't.
He could condemn us all to hell, and He'd be right to, but He doesn't, and He could just tell us to accept His judgement on those that He does sentence to hell, but it seems with the GWTJ.. He'd rather us see for ourselves that He's right. He doesn't owe us an explanation but He intends to give us one anyway.
Or do you have another explanation for the purpose of the GWTJ in your theology of an uncountable multitude of robots?