I donated my DNA to a research project. I have Crohn's disease and type 1 diabetes. I'm likely autoimmune prone.
I get updates about what it's used for. Usually trying to identify causes for autoimmune diseases. It feels good to help out the people fighting disease.
But that's sort of the point. You donated it knowing it was going to research. People using 23andme did not. And they will not be getting updates on the research either.