Alright, so here is what the experiments proposed by Infundibulum look like:
1. Started with recycled naphtha from the previous pictorial to extract another 20g dry fan leaves pictured here in its filtered resplendence
2. (left) 250g water (right) 1g NaOH in 250g water
3. adding approximately equal amounts of solvent to each jar, the lye water pulls this orange substance while the neutral water does not
4. and it looks pretty
5. stirring the jar with neutral water
6. stirring the jar with basic water
7. there is a clearly visible difference between pulling from the nonpolar using neutral water (which is unsuccessful) and using basic water (which is successful)
8. here is the basic water containing the theoretical thc-acid/sodium salt, split in twain
9. a small amount of naphtha is applied to each half
10. the jar on the left was acidified with HCl and the one on the right was not. both were shaken
11. the naphtha from each (left acidified, right not acidified)
The color appears different on camera than in person; the naphtha from the non-acidified extract was lighter colored, more yellow than orange. It was evaporated to yield very small amount of yellow paste that smelled like....plant? it was clearly chlorophyll or some similar ubiquitous leaf component.
the base-water which was extracted to yield chlorophyll was acidified and extracted to yield the desired cannabinoid product.
so the two questionable elements of the extraction, treatment with base and treatment with acid, do turn out to both be necessary for the procedure to work. pH matters!