On rereading, I can't see anything actionable for parents. Article says:

  The whole experience was abusive.

  [my parents] relied on discipline as the only solution: withholding rights, denying privileges, banning books outside the curriculum because they "caused inattention," cutting off the internet, locking TV channels with passwords, and limiting socialization during study time.

We can wish our parents were appropriately liberal, and personally I am fortunate to have been brought up by permissive but not lax parents.

but strict ("authoritarian") parents do not change their habits easily. In my experience parents don't know how to teach independence (the key to adulthood).

My smartest friends left home at 15, to avoid their loving but overbearing/overcontrolling parents.