It seems to me like these scientists haven’t done thier homework on dreaming…
They seem to have mixed up dreaming and dream recall. You have something like 7 - 12 dreams a night. This lady only remembered having three or four dreams a week, but really she had over thirty.
She simply managed to regain her DR. However, it was not as good as it use to be. I’m sure she had just as many dreams as before.
They probably lost no vividness at all. But as she had weaker DR she couldn’t remember them as well - and thus they seem less vivid.
So, it has damaged her memories. More proof of a weaker DR.
I agree with this and is the first thing that came to mind when reading the document. So, that really raises the biggest question - why is she still alive even though she ‘hasn’t dreamt for a year’?