I would agree
The young lady who wrote that paper is a student at U of O. Her paper started as a student poster project. I think its probably gotten more press than it deserved.
These dark streaks don't look anything like water. They look like dust slides. Anyone familiar with how singing and booming dunes behave could understand the process at work here.
It is entirely possible that phase transition of very minute amounts of H2O is what triggers these things.