No, the criticism isn't because people get caught up about CO2 -- it's because "cleaner than other coal" is a very low bar to meet to be calling something "clean" full stop.
Also "clean coal" is not a type of coal being burnt (although that does matter too) but pollution control systems added to coal plants.
Also "clean coal" is not a type of coal being burnt (although that does matter too) but pollution control systems added to coal plants.