Fish farming generally is unethical and harmful to the environment. The fish we eat are carnivores. We still need to feed them, which means we either need to farm or trawl their prey.
The only way this tech would be good is if it becomes a regulatory mandate and pushes up the cost of production and decreases demand.
https://www.seafoodsource.com/news/new-study-finds-continued...
They're saying that salmon farms are not driving greater incidence of parasites and lice in their wild counterparts.
It doesn't say that farmed salmon have fewer incidence of sea lice than their wild counterparts.