I have a Class Action Filled against CT, their equipment is sucks and has engineering flaws that don't allow the miner to maintenance the equipment without void their warranty .
there are no user serviceable parts inside your system which is why they dont want you to open it up. there's powerful electronics in there... running at high currents - do the math if you dont believe me - (2100 watts at 0.7 volts = 3000 amps!) - ok, i simplified, and its less watts devoted to the asics and some go to the fans and cooling system, but still, there's some huge amperage in there and you shouldnt open it up.
you cant sue them because they wont let you open it up, as you risk electrocuting yourself. its not a feeble battery powered device and you shouldnt go poking around in there as it wasnt built to be tinkered with.
sorry you think it sucks, but its a powerful miner and in use by plenty of people (most of whom probably dont think it sucks). if you're having problems suggest contacting their support team and see if they cant help you.
I agree with you about the people should not be poking around in these units. BUT, by not being able to open these to clean them there is no way to get the lint out that builds up on the radiators which in turn will cause temps to rise.