https://www.openstreetmap.org/node/725317945/history

is it really shop=casino ? (if yes - are they selling casino equipment or what?)

Is it amenity=casino (casino) by any chance? Or something similar?

See https://wiki.openstreetmap.org/wiki/Tag:amenity%3Dcasino for this and similar features like

    leisure=adult_gaming_centre
    leisure=amusement_arcade
    amenity=gambling