While I get that security certifications (and existing contracts with the right people!), the slowness of such laws ans disdain for prisoners, especially doing their law research, are big factors, I see a point that even prison admins shall consider. Besides big cuts in spending on capable clients, opening the ability for inmates to write whatever they want in a word processor as easily as it can be is a plus to the surveiliance. Authocracies of today don’t ban their own social medias because an illusion of privacy makes people snitch on themselves.
That doorknob dick.