I find this understanding incredibly valuable, because it is a traditional philosopher's downfall that they try to answer every question no matter what.

Just a nitpick, but this is true of no philosopher, living or dead (by which I mean I can give you examples of every significant philosopher rejecting a question at some point). The idea that we should always keep the 'reject the question' door open is good advice, but we shouldn't frame it with some historically false claim.