No, not really, that was their hypothosis, however, that was not found to be the case. In fact the authors said that they could not find any evidence of fines in histological examination. Fines however, have been one of a few dominant hypothesizes for why carbon is associated with HLLE. The suspected association of carbon with HLLE is not new, this study just took us a small step further in understanding this association. There is a long way to go however. This study does not show definitive causation and therefore caution should be taken when interpreting the data, to avoid spurious conclusions.