Ted Nugent is the same way. I saw him say the he had killed his last porcupine ... said it tasted like a creosote post.
Well, I’ve harvested deer, black bear, wild hogs, rabbit, squirrel, dove and quail.
Never turkey hunted because the season coincided with great trout fishing.
Porcupine is good survival meat, and the flavor (like turpentine, in my experience) is reason enough to leave them alone for just such contingencies.