It is apparently obvious that Dana White doesn't have the final say about what happens in the UFC.
He didn't want the MayMac fight. The owners told him to make it happen. He didn't want Chris Weidman to fight in UFC205, Lorenzo said "make it happen." He didn't want to sell the UFC, the Fertitas said "make it happen." He hired his friends Chuck Liddell and Matt Hughes, WME told him "get these overpaid bums out of here."
There are plenty of examples of Dana White's decisions being overruled and overturned by the powers that be in the UFC.