Masks = some crew on Cathay ware masks some of the time (personal choice) - all crew on JAL ware masks it seems all of the time - some S'pore airlines crew ware masks some of the time - some crew on other Asian airlines ware masks some or all of the time.
Can anyone honestly blame them ?
Whatever your answer best get used to masks on all Asian airlines because they are going to be with us for a long time yet I suspect