I can understand that they have to tell people to comply with mask wearing to Spain even though the law changed yesterday (20th)
The new norm, published on Wednesday in the Official State Gazette (BOE), specifies the places where mask usage remains obligatory, such as airplanes, trains, bus transportation and boats, in the last case only when passengers cannot maintain a distance of 1.5 meters
How or why the crew would bother on the return flight once the doors had closed I cannot imagine. My wicked sense of humour imagined a scenario where all Club - who must be 1.5 metres away with a seat empty in between could take theirs off and the rest keep theirs on. Can you imagine the ruckus? It would never ever happen as it would be impossible to implement.