Call me crazy, but I don't get the argument...
You have to be in it to win it.
If you do not address OL, your OL will suffer. Given that there are limited options for OL in FA, it would make sense, that the more often you dive into the draft to find someone, the better your odds are. And when it comes to drafting, the higher you draft, the better odds of getting a true standout.
We all know that the exceptions make the rule. But if everyone thought you could get starters in rounds 4 and lower, everyone would trade their 1st 3 picks or pass on the draft slot. And that is obviously not happening.
To me, it's a simple thing. You try to fill as many holes as possible with your drafts through a few years while nabbing a good FA here and there. And certainly, you cannot ignore glaring holes. By constantly drafting undersized linemen, short D-backs, odd projects, and the occassional find, Angelo has shown that no matter what philosophy you prefer, he has far too many failures on his resume.