REAL Power steering usually requires a belt to operate a pump.
The wheel then is simply a valve , (not a hyd pump) and could easily be a door knob instead of a ships wheel.
We have that system and find advantages.
The loads are so small the belt is changed on time (8years) not wear.
The autopilot fires 1/2a DC solenoids to steer , rather than a 40a DC pump , so I expect it to have fewer problems.
The hyd pump is large enough to operate a hyd windlass , so on overload no white rebuild me smoke comes out , it just stops pulling.
The hyd pump and oil tank are in the ER , so by leaving a couple of inches of water in the bilge the windlass system is cooled , no hassles.