The Polarity of Non-Duality

[Steppingfeet]

I don't think that non-dual realization necessarily results in a lack of desire to help others. Ra speaks of their own motivation in helping:
14.18 "The One Being of the creation is like unto a body, if you will accept this third-density analogy. Would we ignore a pain in the leg? A bruise upon the skin? A cut which is festering? No. There is no ignoring a call. We, the entities of sorrow, choose as our service the attempt to heal the sorrow which we are calling analogous to the pains of a physical body complex distortion."

I think that the desire to serve becomes more of a natural reaction the more the non-dual reality is recognized, similarly to how a body may heal a wound. We, being the body of the Creator, naturally seek to serve more and more as the we grow in our realization of our innate oneness with the rest of the universe (in other words, piercing the illusion of duality). Each entity is unique in its desire and ability to serve, so it will not always look the same. For some, like monks, perhaps their service is found in solitude. According to Ra, those in solitude can still serve through lightening of the planetary vibration. Many monks also serve through example, teaching, charity, and other types of service. For others, perhaps this service is manifested in helping to establish social structures which honor the oneness of all beings. For others, it may be channeling spiritual information.

Also in support of your point:

57.33 Ra: The purpose of clearing each energy center is to allow that meeting place to occur at the indigo-ray vibration, thus making contact with intelligent infinity and dissolving all illusions. Service-to-others is automatic at the released energy generated by this state of consciousness.