I dont think Im being way off making the basic assumption that teams who get to pick first have some flaws in the FO, CS and roster overall. In other words, the fact so many early picks bust is not a reflection of the value of draft picks, it just showcases how much bad teams make terrible decisions with them on top of having those selections playing on bad teams.
Being on the side not upset about winning these last 2, i'd say this is a fair point about draft pick performance.