After you beat the Stow-on-Side Gym Leader, you see Bede using Chairman Rose's Copperajah to break down a replica mural of the hero of Galar, and he justified his motives as collecting Wishing Stars for the Chairman.

After the you beat Bede, Rose and Oleana show up, angered by Bede's negligence over a historic site, and Chairman Rose revokes his Endorsement and he becomes shocked, saddened, and bitter towards you because he blamed for the incident

Bede: "B-but Chairman, you can't be serious?!"