That's a quite a bit weaker of a claim than "philosophers don't understand Gödel's theorem". To back that up you need to point to some philosophers who (a) discuss Gödel's theorem in such a way that (b) they demonstrate their lack of understanding. As it is you're just claiming that one particular subfield of philosophy doesn't have much overlap with another. How is that an indictment of the field? There are few computer scientists working at the intersection of quantum computing and database theory. There are few physicists working at the intersection of biophysics and string theory. It's not a meaningful criticism unless there's reason to think that there is something in the intersection that practitioners are culpable for overlooking, and you haven't provided any such reason.