The practically important part is that the membrane does not degrade from the chlorine and ozone, the typical water disinfectants.
But will not the separated salt clog the membrane? Separated salt is an issue, e.g. in distillation - you have to remove it to remain decently efficient.
And speaking of efficiency: do energy costs make mass desalinization with this technology feasible?
Here is an overview: https://www.suezwaterhandbook.com/water-and-generalities/fun...
In terms of efficiency, it is cost dependent. Making drinking water is not cost prohibitive at this time but for large scale agriculture it would typically be considered too expensive to irrigate with RO desalinated water. This technology appears to lower the energy requirements but more research and scaling it up is needed.
However boron is a problem, most RO water has more boron than is healthy for plants. Though I saw one press release talking about a membrane that unexpectedly produces water with low levels of boron.
This link is interesting: https://www.globalwaterintel.com/sponsored-content/boron-a-k...
Saudi Arabia, Kuwait, UAE, Qatar, Bahrain, and Libya are almost completely dependent on RO for water.
The Carlsbad plant in San Diego was $1B and costs $80M/y (@ 40 MW) to operate while producing 56k acre-ft/y (7% of demand), enough for about 400k people or 20k acres of farmland with average crops.
What would cut water use greatly would be the elimination of meat agriculture which depends on crops such as hay, alfalfa, and cow corn. 2/3 of Utah's water goes to irrigating crops to feed cows.