Jones is an idiot, but he doesn’t get all the blame for Landry. From my reading, the previous ownership wanted to dump Landry in 1987. It was probably time - Landry’s defensive philosophy was way outdated. But Tom Landry was a class act and should not have been dumped that way.
Agree with you. Under Landry, the Cowboys had become easily predictable on both offense and defense.
Opponents knew his tendencies in most situations and took advantage.