It is mostly a price point thing but I would expect this tech to come down in price at the same rate that other 3D printing technologies have over the coming years. We're in the 'Stratasys' era of full color high res 3D printing right now.
No, it has nothing to do with resolution or colors. Did you read the article? It's about the absolute pain that resin printing is because of its toxicity.
The moment you have fully non-toxic resin, it will take off.
