Really the only explanation. They’re jealous of his career. They’re jealous of his success. Imagine being a team that’s meddled in mediocrity and pure embarrassment for as long as they have.
They look at Doughty, with his 2 cups, his Olympic gold, and actually bringing his city CUPS. He’s a WINNER. These teams have felt humiliation and pain for so long, they see an actual winner who also gets under their skin easy, of course he’s going to drive them crazy.