Even if you wear off all of the plating (which you won't) it doesn't affect how it shaves.
As someone else has said, one of your distant descendants may have to replate a razor they inherit.
Personally, I'm not worried about plating. I have a 58 year old fatboy with lots of plating loss and I sometimes think about plating it. Otherwise, it's in perfect shape. Shaves like a dream.
There's a motorcycle plating guy in my town. He offered to replate a razor in nickle or chrome for $25.00.
As long as there are motorcycles on the road there will be guys doing plating of parts in every city and town and any of them can replate a razor.
As long as people use silver plated table ware there will be electro-platers who will plate a razor in silver and even gold if you want.
I thought the very same thing. Just use a soft cloth. If your razor develops some soap residue after a few weeks, then use a very soft bristle toothbrush once, and go back to using a soft cloth after each use. Don't scratch the plating!Why are you using a toothbrush? Out of all the things you're doing, that is the one that has the chance to degrade your finish, if done after every shave.