This is largely true, but there's an obvious reason why: fans want players replaced as soon as they peak. Then they complain about those players' performance for, literally, years, until their declining play is actually poor enough to merit replacement. They were doing that last year with Jason Witten, for example. They've been doing it for years with Anthony Spencer and Jay Ratliff. This offseason it is Demarcus Ware's turn in the barrel. Fan sentiment turning against a player is a precursor to the end of his career, not a measure of it.
It's the easiest thing in the world to say you want a declining player gone. Much harder to determine how long you can effectively use one of those veterans before having to spend valuable resources on his replacement.
We didn't do that at OG. We whiffed on the draft picks we'd tried to develop, and then weren't in a good place to replace Bigg, Gurode, and then Kosier in relatively quick succession. While I've frequently said that OGs are a relatively available commodity for the NFL (you have your pick of all the college OG candidates, the college OT converts, and the small school college players who can really benefit from NFL strength training but who are otherwise plenty athletic enough to play in the box), it is true that you have to invest time and a lot of coaching on these mid-round picks to make that strategy pay off. Grabbing a 'serviceable' player (by serviceable, I mean a slightly below-average NFL starter) for two years to buy time to develop players doesn't excite anybody, but when you've got to replace your OT(s), possibly your C, two DL positions, two CBs, and get a young QB on the roster to develop, it would have been dumb to blow a premium pick or premium cap dollars at a position you can fix with time and at a value if you can just find yourself a stop-gap solution.
Everybody and his or her brother piled on Jerry/Jason for the tactic, but it was the right thing to do. If we hit on Leary, Mack, Arkin, Kowolsi (any two), we're now finally in a position where we can devote precious resources to restocking an aging DL next season and we'll have basically repaired both wings and the engine of this clunky airplane mid-flight. That's pretty impressive as far as I'm concerned, which is why I get grouchy when I hear so many people complaining that we didn't break the bank for Nicks & Grubbs.