I tend to agree, but when you look at what Leipold is doing at Kansas, there might not be any such thing as a football program that is incapable of being revived. As you said the right head coach hire has so much to do with it.
I feel bad for Colorado because they made a couple of HC hires (Hawkins and Tucker) that at the time made sense and seemed like they might work out. Hawkins was great at Boise St/put them on the map and Tucker had an SEC/NFL pedigree that really helped with their recruiting, but he bolted. The Jon Embree and Karl Dorrell hires were both "Huh?" hires that looked iffy right off the bat. MacIntyre, who ended up being the most successful of the bunch, was a fairly uncertain one as well.
There are good programs and there are bad programs. However, Colorado has had 8 seasons with 4 wins or less since 2006 (not counting the 6-game long COVID season). That is just laughably bad and speaks to something amiss in their administration, not just the fact they are a low man on the totem pole.