Dzogchen is not "one who merely understands emptiness and tells about". Awareness-emptiness=nonduality.
One looking to the sky and talking about the nonsubstantiality of the appaerance cloud in that sky, or standing near the lake staring to how is the moon in it, is not our nature. There is no viewer staring to a view and analyse it.
In awareness-emptiness is no discussion HOW it is, possible.
All Dharma discussions leading to understanding are jewels. Discussing about HOW is Dzogchen, is fooling all the precious teachings; Theravada, Mahayana, Vajrayana-studies as just game, remaining in suffering.
Having no knowledge at all, only sharing what wisdom whispers, pointing to NO DEBATE possible IN DZOGCHEN other than MA RIGPA. (in last one, I am great).
ps. "let's drink a couple of what ever glasses": whatever...freed...
First there was nothing. Then God said: “ May there be light!” And there was light.
There was still nothing, but now that was much better to see.
All plays freely as a symphony orchestra without conductor.