Media Members who are Stans
Colin Cowherd comes to mind. The guy spends an hour a day discussing LeBron James on his radio show. If he takes a call from a listener who disagrees with Cowherd's assertion of LBJ (whether it be that LeBron is already the GOAT or that nobody in NBA history could defend LeBron, even though Shawn Marion destroyed him in the 2011 Finals), Colin won't let the caller make a point. He continuously interrupts them and spreads his agenda.
Who else can you guys list who are major stans of a single player?
Note: Let's not count people like Miami Heat, LA Lakers, SA Spurs, etc., beat writers because their job is entirely based on being biased.