Well yes, it's true that I have no way of knowing that he was actually guilty, that he got a fair trial, etc. But assuming he actually was guilty (a potentiall

Well yes, it's true that I have no way of knowing that he was actually guilty, that he got a fair trial, etc. But assuming he actually was guilty (a potentially bad assumption), then the prison sentence itself was not objectively unreasonable (it's within striking distance of an average sentence), though the prison conditions very well might have been unreasonable.