This isn’t about converting the already brain-wormed, it’s about letting those who don’t want brain worms know that a brain worm is currently deciding how brain worms are researched and regulated.
So the point is to convince people already in the in-group to remain in the in-group?
That doesn't seem to bring significant clairity as to why this matters.
If your definition of the “in-group” is “people who might be open to heeding the warnings of 1/3rd of all living US Surgeons-General on topics of their health” then yeah, I can see why that might not clarify anything for you.