SMCJ, you have yet to determine my "limits" as a Dharma interpreter, demystifer, and upgrader. But, yes, every human has limits on every level, and that includes legendary and contemporary Dzogchen teachers.
I do not have the capability
to determine your "limits as a Dharma interpreter, demystifier, and upgraded." I have had my own prejudices about how Dharma is to be enacted proven wrong time and again. I cannot correctly assess what is going on in my own mind, much less someone else's. You are free to do as you please.
However it is incumbent on me to have some sort of protocol for where, when, and from whom I take guidance. I am a bit conservative and picky about that. My conservatism is not totally dictated by the establishment of the lineages, as I've said I've had my expectations invalidated repeatedly. I've met lowly geshes that I thought were amazing, and rock-star/grand pooh-bah high lineage lamas that made me want to run for the hills. But my threshold is quite high for what I will accept as a credible voice in Dharma. Suffice it here to say that you have not crossed that threshold, but since that is my own personal choice in the matter you should not take offense.
ChNN's quote is appropriate in almost any thread here. I personally believe that it should be the premise of any
study of Dharma. But particularly so in Dzogchen, where the profoundest of Truths can so easily be so converted into complacency and dismissiveness. My own take on Dzogchen can be characterized as, "Well if the Ultimate needs nothing from me, then so be it. But since I don't like suffering let me put my efforts into the relative, lower tantras." As such I am not a Dzogchenpa per se, but I do allow for it in my worldview.
I am also an old geezer. As such I can claim to have been studying TB for a third of a century. Having been the head of a small Dharma center that hosted teachers from all lineages I feel I've had an embarrassment of riches when it comes to exposure. But quite frankly I'm still a beginner when it comes to actual practice. I have not utilized my time wisely, so even with decades of participation I have little to show for it. However since I have a somewhat odd perspective on Dharma I hope that I can at least entertain some people with my posts, hopefully without offending anyone too much.
In the Tantra of the Beautiful Auspiciousness (bKra shis mdzes ldan gyi rgyud), this "Great Primordial Purity" (spyi gzhi) is defined as follows:
What is known as "The Great Primordial Purity”
Is the state abiding before authentic Buddhas arose
And before impure sentient beings appeared;
It is called the great Primordial radiance of immutable awareness.