My main gripe is with restaurants that over-salt food like french fries. There is no reason they need to pour so much salt on a batch of fries that it makes my mouth burn to eat them and it isn't like it isn't poured on after cooking, which you could do on your own if you like that much salt. Those places are mainly staffed with teenagers who usually can't get the order right the first time anyway and asking for a special order that might inconvenience them these days is just daring someone to spit on your hamburger. So, yes, I would like to see restaurants voluntarily make policies to cut back on excessive salt.
The swelling is a kidney issue, and a serious one. You need more competent medical help than you’re getting.