Whats the point of challenging calls if refs can't admit they're wrong

Garlands jumper gives the Cavs a 3 point lead with 40 seconds left

Cam Spencer with a clutch 3 to cut the Jazz lead down to 1 7th triple and Brice Sensabaugh calls for the travel at the other end

Compilation of NBA refs getting ridiculously overzealous for no reason at all