Using off the shelf consumer electronics for safety critical applications is fine.
In this case the controller is engineered to work well for a resonable time.
Ok, the controller is not waterproof, but if you get water inside a sub, you have larger problems than moving it, and you have other ways of triggering an emergency blow.
honestly I would prefer to drive a DIY custom built machine using a popular off the shelf gamepad, that way I could buy a handful of controllers and keep them in the cockpit as backups.
Using off the shelf consumer electronics in safety critical applications is never OK.
Using off the shelf consumer electronics for safety critical applications is fine.
In this case the controller is engineered to work well for a resonable time.
Ok, the controller is not waterproof, but if you get water inside a sub, you have larger problems than moving it, and you have other ways of triggering an emergency blow.
honestly I would prefer to drive a DIY custom built machine using a popular off the shelf gamepad, that way I could buy a handful of controllers and keep them in the cockpit as backups.