In the absence of a specific mechanism it seems very implausible that the full moon has a measurable positive effect on the plants.
This is not the case here.
We might not know everything about biological processes in agriculture and all the variables that come into play, however that doesn't mean that any idea that isn't part of "mainstream" agriculture has merit on its own.
Agricultural-science is fraught with misdeed.
Also, no company can stop independent farmers from starting a biodynamic farm and produce more than their competitors thus being able to have even better margins.
So I think we can safely classify those kinds of worries in the "conspiracy theory" until proven otherwise.
When asked for sources you answer with obscure conspiracy theories which are again, not backed up.
I'm sorry but science it built on stronger principles than this.
I can say that what I've seen with my own eyes: crops which were planted during a full moon versus crops (from the same seedlings) going in a week later, is that the moon-crops were bigger, juicier, and more resilient to problems - this over multiple years, in my own personal garden, under the watchful eye of my own gardener, whose opinion I trust inherently ..