I would argue that'd be stupid as well. But it does feel in line with that particular character. But that is beside the point which is, Cameron made a mech that doesn't just look cool, it functions, it has a power source, motors etc
This!
Richard Donner understood this, verisimilitude. Just like Star Wars, Superman is also fantasy,and when it fantasy doesn't even stick to its own set of rules -
MEH :thumbsdown