Hi, I'm Gilded, SFN veteran and Finnish person extraordinaire.
Pine trees are boring even for evergreens and basically the a-holes of the forest. Cutting them to pieces to make furniture and houses doesn't do much to change that. The whole acid thing indeed stems from a really old thread (like from 2005 or something) where I was curious about acids that could potentially burn their way through a pine table. The song/poem is a reference to The Simpsons, particularly