None of the above. I assert that philosophy has failed to produced a concrete methodology for discerning truth. If axioms exist and are accepted then we should have access to rigorous tools to answer philosophical questions. We should be able to make wise choices. But near as I can tell (correct me if I am wrong) modern philosophy's only claim is that you cannot make moral claims. You might find a system that can guide your personal decisions but not one that can be used to instruct someone else.

You can't build a functional society that way.

Again I may be way off base. I lost interest in modern philosophy after Kant and Hume. I don't even disagree with them. Their critique was correct. But all we had to do to fix it was to agree on some axioms and then continue. We haven't done that near as I can tell.