... Is there a way to fix it?
Agreed that removing the plating is undesirable, but it might be the lesser of the available evils. A rough gouge like that will be a magnet for rust, no matter what grade of stainless Feather used. The problem is that the gouge will likely include tiny crevices where the passive film cannot form or will not protect the underlying metal. The plating has been damaged by the gouge already, and a smooth, unplated surface would be more corrosion-resistant than a rough one.
If the gouge were smoothed ... wouldn't plating edges still be left? If so, would the edges of the plating also act as a "crevice" and block the passive film?
Stainless steel does not require any plating. Do not confuse the finish with plating. That mate surface is a result of mechanical treatment.
Hard to say based on the photos only. Could be also chemical treatment or even coating.I question this. I had a Feather and it appeared to have a coating of some sort (did not look like bare metal or a finish on the stainelss). In fact it looked defective and ended up returning it.
see edit above - searched B&B.