First let's deal with my main point.
You've said....
The concept of Free Will is for sitting in judgement and allocating punishments.
The concept is FOR....I hope you understand absolute Free Will. Absolute Free Will is about social control not reason.
The irony here is that you are judging those who believe in absolute free will as believing in it because it lets them sit in judgment. This is judging them and also allocating them control over their beliefs much as someone believing in Absolute Free will could. The choose the believe because they want to judgge others and punish.
I think this is ridiculous
1) well, you managed to judge them without believing in absolute free will.
2) it is conflated a possible consequence for the reason why they believe. It seems pretty obvious to me that absolute free will is our default belief. Children think this way. They think they could have chosen the bike or the computer game and when they mulled over each present it sure seemed to them like it might go either way. So, I think psychoanalyzing the reason why people believe something in the way you did is a) not founded and b) judgmental.
And it seems implicit that a determinists and those who believe in relative free will don't blame? A determinist can obviously blame and sit in judgment and if they need to they can say reason compells them or their feeling compells them or that it is natural. Just because SOME people who believe in Absolute Free Will sit in judgment does not mean that is why they do. Nor are they precluded from judging others less than a determinist.
They certainly don't have to judge, and many who believe in free will, still see deemly on the justice system and punishment vs. other approaches.
Determinists need not give up judging and punishing and they don't seem to. Even the Calvinists didn't.
But there is not the slightest bit of extra freedom. And those who get educated were compelled to get educated, were thrown into families that priortized this, or were compelled by their genes and environments to do this, and never could have done something else.When people talk about "free will" they sometimes refer to the feeling of empowerment to chose, and don't philosophise about their feeling. The power to chose is augmented by knowledge and critical judgement.
On the other hand people can gain knowledge and learn reasoned judgment. This happens. It is caused by what went before like everything else.On the other hand relative free will is obtainable , an individual's power of choice is augmented by several means, the most civilised of which is knowledge and reasoned judgement.
And the power of choice is not augmented. The variety of actions (including thoughts and speech and doing things) will likely be more varied.
But one does not gain the slightest extra POWER in choosing. Things happen. You will unfold like everything else.