1) I never suggested that high school coaches should take a college coaching job, so not sure why you mention that. But, just to make a point, there have been a LOT of college coaches who began as high school CC and track coaches. I don't have an opinion about HS coaches vs. college coaches, but the hiring of them has been done a lot thus proving right there that you and the 10+ Year D1 coach are wrong about that.
2) Understaffed, schmunderstaffed. MOST D1 programs actually HAVE decent web sites for their CC and track teams. If it is done the majority of the time, and by schools that see themselves as understaffed (because they all see themselves as that), then it can be done by more of them, and I suggest ALL of them except for brief periods of time during unforeseen turmoil.
3) My main point apparently bears repeating -- these coaches and programs are shooting themselves in the foot by not providing information that recruits are looking for. If you want to pass the blame, then I can see how the problem exists at some colleges; because people like you pass the blame. Not everyone does that as is evidenced by great information on most school sites.