I agree, definitely for those safety-related critical components.

Got a separate sonar monitor that needs a controller to navigate menus? Sure a Logitech F710 would work for that. For actually controlling the entire sub? Definitely not.

There is a good reason engineers specify single points of failure so as to mitigate them in the design phase.

Move fast and break things isn’t the right philosophy to have when you’re leagues under the sea and a failure can be absolutely catastrophic lol.