I think we're all agreed the poor fellow is probably somewhat paranoid and somewhat terrified and is unlikely to find peace by sueing a hardware manufacturer or mechanic.
But he is acting pretty rationally considering his inputs are being distorted - he clearly *believes* that he hears bad things from Apple hardware, and to test his hypothesis he has tried a range of devices from that company. Of course the voices are closer to home, so even a generic MP3 player will have the same 'bug', but he hasn't realised this, and so truly believes Apple are part of the conspiracy - hey he's heard the evidence with his own ears. In that situation, assuming you didn't make the assumption you yourself were paranoid, wouldn't you sue for compensation? $100/day isn't that outrageous for a corporation making your life a misery like this, and you have clear evidence which you can audibly hear clear as day.
So aside from having his inputs confused, he seems to be acting pretty rationally. Imagine a distorting inputs filter, and schizophrenia becomes a lot more understandable - if the radio keeps calling you names, and tinfoil shuts it up, you wrap the radio in tinfoil - I would, you would, it's sane and rational considering the distorted inputs to the brain.
And the state of his mental health would explain a few things, I always thought you'd have ro be nuts to buy a mac.