Drywall a red flag for Smokey Mountain Rental

[Kyler J Sloan]

I have heard from a few people to stay away from short term rentals in the Gatlinburg area which have drywall walls and ceilings. 

If the rest of the house is themed correctly, why not simply install wood siding/paneling over the drywall?

I have seen multiple people discard properties on account of the drywall alone, and do not understand why, when the installation of paneling does not seem to be prohibitively expensive. 

Thanks.