I recall that the first plastic bottles for spirits were a different kind of plastic, whatever soft drinks and other non-alcohol beverages use. There were problems so they were withdrawn from the market. Thereafter the PET bottles were introduced. A lot of what people believe about BPA is speculation, but if you're a BPA paranoiac, then you probably should stay away from plastic distilled spirits bottles.

As for consumer preference, spirits consumers aren't crazy about plastic bottles either, which is why they are mostly used for handles of bottom shelf products.