“Just about every” is a real reach here. They’ve definitely missed completely on a few, a few have taken time to become serviceable, but just in the fast handful of years, they found Rousseau, Elam, Hamlin, Davis, Bass, Jackson, Knox, Singletary, Oliver, and of course Allen, Dawkins, Edmunds and Johnson. They’re all starting within a year or two of their selection. I hope you don’t typically expect day-1 impact from most draft choices, because that’s not realistic.
This is not to say each of the above are superstars. They are high quality contributors with growth potential. So, let’s not confuse somebody saying guys like Edmunds suck with the fact they all became NFL quality players in less than 3-years.