I got a certification from the State of New York that one of my ancestors was a Rev War Veteran and our genealogy to prove it and my daughter sill did not want to join the DAR.
The ancestor whom my mother used to join the DAR under was living in New York state at the time of the Revolution--soon afterwards he moved to Virginia. Her cousins had joined under a man of the same name in Virginia. She did have a different ancestor in Virginia who had served in the Virginia militia (we later found his obituary which mentioned his Revolutionary War service and called him "one of the fathers of our freedom") but by then she was already a member so it didn't matter.
When I first got started I wrote to a great-aunt whom I had never met and told her what I was doing--she acted as if joining the DAR was the last thing she would ever think of doing. It may be that the Marian Anderson debacle caused many women to write off the DAR as a group they wanted nothing to do with (although my great-aunt didn't specifically mention that). That was a blunder by one person or a few individuals in the organization but it gave the whole society a negative image at least in many people's minds.