Hong Kong has apparently returned to a so-called big debate on different ways to enhance land supply for housing. From sparing the green belts to building on a golf course, it seems options long settled by the last administration are being revived for reassessment. Unless the current government demonstrates there are overriding reasons to undo previous decisions, it may give the public the impression that it is dragging its feet and yielding to sectoral interests despite a deepening housing crisis. The call to scrap a housing project on an exclusive golf course in Fanling is not new. But unlike a…