> The reason might be that philosophy is actually practically mostly irrelevant. I have not seen one undisputed statement of philosophy. And so it can neither test its statements, nor let others see their validity.

This is the core confusion I think. I find philosophy very relevant for the way I reason and solve problems and evaluate arguments, and in this sense philosophy is powerfully practical. But it’s true that for any given claim, there is always the possibility of taking the opposite position. This lack of final, case-closed consensus doesn’t mean that philosophers individually haven’t converged on true beliefs or haven’t made progress. It’s just that unlike mathematical truths, we can write out the proofs of our arguments, but there’s always someone who disagrees about one of the starting assumptions. So then civilians who haven’t heard of people like Parfit think to themselves, wow 2k years and you can’t tell me anything about ethics or logic or epistemology — it’s like bro just read the literature