This author doesn’t seem to know much about graphene. Another form of carbon, Graphite, is pencil lead.
From the article-
“A University of Arizona-led team of physicists has discovered how to change the crystal structure of graphene, more commonly known as pencil lead.....”
Graphite, named by Abraham Gottlob Werner in 1789, from the Greek γράφειν (graphein, "to draw/write", for its use in pencils) is one of the most common allotropes of carbon.
You can get graphene from graphite, but it is a much more delicate process than just flaking off graphite from a pencil.