Why, because that was never in question, red-herring-monger - Jim has repeatedly made clear his vigorous opposition to a number of LP planks. The question is whether despite those differences libertarians are, as Jim said, "our good friends" who "have some pretty good ideas about constitutionality, freedom, Liberty, etc." - or if they are, as you claimed, "nothing but the ultra kook anarchy fringe of the left."
The LP party platform and those who adhere to it are indeed the ultra kook anarchy fringe of the hard left.
And those who vote LP are spoilers and make it so Dems win.