Never mind the nose position.
Who ever cares about nose position?
I like it to be aligned with the direction of flight, unless I choose to side slip.
I would agree that a trimmed aircraft is a good thing, but not always the most important thing -
flying the plane is the most important. There are types of aircraft, and operations, where flying out of trim for short periods is inevitable. Pilots must not be lulled into thinking that the trim will absolve them of having to fly.
So pilots, you can use the flight controls in flight, if you think that your doing so will result in the aircraft being flown safely....
As for rudder, it is a primary flight control, but not to the exclusion of the ailerons! Circuits are not flown with the rudder and trim wheel alone. The aircraft was certified with co-ordinated use of the flight controls, so that is how it should be flown.
An airplane that is in trim, and is left alone, will NEVER stall/Spin
Is generally correct for most GA aircraft, but certainly not absolutely true. Pilots who seek to be proficient flying various types should avoid being drawn in to generalities.