The rude as hell Bill Belichick was popular as the WINNING Patriots coach.
Remember, that’s a Boston area team. Those teams are popular in ME, NH, VT, RI, and parts of CT…..and the residents of those states still call people from Massachusetts “MassHoles.”
Belichick would have been popular with the Jets or Giants or Browns fans if he’d been a winning coach (he was popular as The Tuna’s DC because they won).
Belichick, if winning, would be popular at some universities (TX, LSU, TN, ND, FL, O$U, USC (The USC), South Carolina, Miami, ncsulol, etc.).
He’s unpopular anywhere he’s not winning BIG.