In the big scheme of things and in the long term...it doesn't really matter who is the DNC chair.
Trump and his rabid cultists will prove to be the best recruiting tool for future Dem's...that they could have ever hoped for.
After hiding it for years, Chump has unleashed and made OK to publicly show the hatred/bigotry/racism/misogyny/xenophobia/fake Christianity...that are the true hallmarks of the extreme right.
For that, decent American citizens... should be thankful.
Deepest Sincere Wishes: