Envy? WSU was a long-term top 5 team last year, has a recent F4, a not-too-distant S16, is a pre-season top-10 pick, and had (and will again have) multiple AA's on the roster. CU has nothing that we can envy on their resume.
Insecurity? WSU has been in this position before and appears to be maintaining its' status year-to-year right now. There's not much for WSU fans to be insecure about.
CU, on the other hand, couldn't make a S16 with a NPoY and a Sr.-dominated team. They've dropped from a top-20 team to a pre-season top-100 team in one year. It's CU fans who should be (and have every reason to be) insecure.
Some WSU fans are just trying to help them understand that. We don't want them to get their expectations too high and then be disappointed.