Dermal Fibrosis and MPB

Is Dermal Fibrosis, a Critical Factor in MPB? See website Hairloss-research.org

From the information noted in the link, it sounds logical that dermal fibrosis can be considered a cause of male pattern baldness (MPB), but is it a finding that goes along with MPB or a cause of it? Also, as noted, more investigation into the many underlying causes of hair loss needs to take place before dermal fibrosis can be deemed the critical factor in MPB.