Don't know why you're being such a dick about this.
So now are you saying you did remove the exhaust during this process? Is that what makes it accessible to be able to remove the valance w/o removing the bumper first? Seems to me it's a whole lot easier to remove the bumper to change it out than to remove the exhaust, but hey if it works for you, who am I to argue. However, if you were able to accomplish that when your exhaust was removed, it's somewhat misleading if you are giving general advice that that is a suitable method for typical install (especially when you didn't exactly mention that part of the process in the first place).
Or maybe you didn't remove the exhaust & you're just being sarcastic like all the other rhetoric that follows?