It was much harder 30-40 years ago. Some of the best runners in the world ran cross country in the NCAA. World record holders and Olympic medalists. The UTEP of the early ‘80s would easily win the nationals. WSU had two world record holders. Teams took it very seriously , I have no idea where you got the idea they didn’t. I am not a Pre fan but his race against Nick Rose was epic. There is no excuse to be ignorant with the amount of information available online and many of the meets are on YouTube.
Vin Lanana has been successful wherever he coached: CW Post, Dartmouth, Stanford, and Oregon. I bet sooner rather than later UVA will be good