This topic comes up often. There's a whole lot of speculation and not a lot of fact.
Nobody knows what those super-awesome-vintage guitars sounded like when they were new. Maybe they sounded better than they do now, and maybe their age makes them sound better now. Strangely, the classical world believes the opposite is true ("old" guitars don't sound as good).
I don't know why folks don't just worry about building (or buying) guitars they like the sound of. If altering a vintage design produces a guitar you like the sound of, that's a win - isn't it?
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