Desalination produces a lot more water-per-KWh-energy than unboiling water from the atmosphere. Elsewhere in this thread someone linked a paper which estimates

Desalination produces a lot more water-per-KWh-energy than unboiling water from the atmosphere. Elsewhere in this thread someone linked a paper which estimates up to 100 litres per KWh for desalination, vs ~1 litre per KWh for condensing. Saving on machinery, or chemicals, might be important but $150 of materials for a device will buy you ~25,000 litres of water in bulk (in the USA).