They are denied one specific grant for higher education, but they are taught for free within the prison system and can pay for outside education themselves. This is different from being barred by law from learning to read.
Your link does not say that they are denied by law from testifying in abuse cases. It just says that prison abuse happens.
Their children are more likely to end up in prison, but they are not bound by law to the prison that their parents were in.
Prisons do not force divorce.
By saying that imprisonment is literally slavery, you are absolutely minimizing the horrors of chattel slavery.
You did it again! The gap between imprisonment and chattel slavery is much larger than the gap between imprisonment and wage slavery.
There is no way that Elizabeth Holmes would submit to chattel slavery, but she calls imprisonment "hell," and she is far off the mark. https://people.com/elizabeth-holmes-breaks-her-silence-in-first-interview-from-prison-it-s-been-hell-and-torture-exclusive-8789737