It depends on the buyer. Some collectors like them pristine looking while others like the natural look. Personally speaking, I prefer them in a natural state, of course I hand clean them the best I can and that's it. Historical objects are never found with the just out of the factory look. Just my taste.
90+% want clean bottles even in cheaper ones. The original state was not stained or etched. And, cleaned bottles/any antique glass brings a higher price. Very few want to display dirty, stained bottles.
In my opinion tumbling destroys the bottle. It removes glass & turns the bottle into something it never was...Some people choose art over history & would rather have that shiny bottle in the window. Some people don't care about stain & want the bottle to have all the glass it was born with.