If the goal is human understanding, I think there are some concrete steps that can move us closer to that goal.
1. Make expository writing count in job applications
2. Make viable an educator career path for your students. Educator broadly construed: classroom teachers, science journalist, publishing/media business etc. Provide training, host workshops, introduce connections
3. Work with philosophy, history, and anthropology departments to further the study of mathematical practice
4. START PAYING YOUR TEACHERS & LECTURERS MORE
It's simply not a sustainable narrative to champion for human understanding while driving its stewards to bankcruptcy.