There are many guitarists that refinish the satin to give a clear coat just for the sound. It doesn’t seem that it would matter, and I can’t tell you what the reasons are. But I trust my guitarist friends to know what they are doing and to tell the real reasons they do it,lol.
There’s a lot of mystique to this stuff. If China starts putting out sub-$100 Strad sonic copies, no matter how good they sound, it won’t even put a tiny scratch on the market in the historical instruments. Though a lot of amateur fiddlers will be tickled.