Well i agree on that. I've long believed premier left tackles were ridiculously overrated. What's more is that you line is only as good as it's worst player. It gives you nothing to have the best tackle and center to play the game if your guards are Vlad ducasse and John Miller, so you have to have 5 good ones if you want your line to make up for deficiency elsewhere. It's like when people talk about having a great D. It's pointless to try to win with defense unless you have a top 5 all-time elite defense (seahawks, broncos, Bucs, Ravens, 85 bears etc). It's much more efficient to load your offense with skill talent and create a gameplan that exploits weaknesses of the D that you play.
If the Bills want to take O-line at the top of the draft, I'd rather they trade down a couple times and get 3-4 of them in the second round, than 1 at the top.