I suspect that eating every day with this chopsticks could made people to eat more salt than before

They are shocking with electricity their own taste buds... maybe destroying them, or reducing their density?. After some time people with a numb scorched tongue could find the food bland, and would start adding more and more salt to reach the same level of tastiness again.

So I wonder if this would be sustainable in the long term (but is just an opinion, and I could be wrong).