I think the injunction to preach to all is followed very well by “The Church” and much less well by the members. I know some of the most successful contacts on my mission were with people who didn’t seem “ready” for the Gospel - and that included the punker, the man living with his girlfriend, the addict AND the rich and well-educated. Yet, in my callings, I constantly see and hear members talking about who might be “ready” to hear and accept the Gospel - as if there is a formula that can be followed. There simply isn’t.
Everyone is a potential disciple of Christ from our limited perspective. Pres. Hinckley was asked once why we send missionaries to Christian areas and countries. His answer, in essence, simply was that we can't know who is looking for more truth about Jesus until we ask them. I really love that answer. I would add that we have no idea who yearns for a better understanding of their divine nature until we ask.