Btw, your comparisons are no where near the same.
The point is, an NFL coach, no matter how terrible by our standards, is still a HELL of a lot better than us. Obviously, anyway, because they're coaching the NFL, we're not. Just as an astronaut or doctor or anybody in any field that we don't have expertise in knows how to do their job better than us, even if they are among the worst in their field.
I don't think Rivera just started coaching better. Our schedule got notably easier later in the year, as well as Chud's playcalling changing around week 8 or 9, which allowed our offense to thrive and thus, Cam went off for us. You give us the playcalling from Chud the last half of the season, we are in the playoffs right now. Let's give Shula a shot before we bitch about the hire, because I am certain that Shula knows more about NFL football than you or I.