Are leaky refrigerants still as big of an issue? CO2 is fairly benign, ammonia... is toxic but doesn't it break down over time? Not sure on that one.
Anyway, I'm sure the combined electricity usage is a bigger issue than the refrigerants. If this (and other) technologies can help reduce that, that would be great.
Mind you, there's a few things that can already be done to reduce power usage of cooling solutions; better insulated buildings (with shutters, awnings, and heat-reflecting windows), chest fridges, evaporative coolers, etc.
There was a video about this clay fridge (https://mitticool.com/product/mitticool-clay-refrigerator50-...) that cools its contents (by 10-15 degrees compared to room temperature) just from evaporating water; analog tech like that could be used anywhere to help cool things down.
[1] https://drawdown.org/the-book