Rookies aren't proven commodities but if they turn out to be good backs, as Forte did, then their clock is at one o'clock not half past nine and counting down to midnight. These days rookies also cost you far less so it's a bit easier to gamble that one will be productive and if not cut your losses and find another. Arian Foster was an UDFA so sometimes you don't even need to spend a first round pick to find them.
Can we blame Benson for his hold out. Hell yes we can. Top draft picks then and now are slotted as far as their rookie deals are concerned. The top pick gets A, the second pick B, the third pick gets C and so on. Benson's offer was slotted but because it wasn't a very strong draft the amounts were not as high as agents expected. He was offered what he should have been offered based on those picked around him. He just thought he should be worth more. Kinda like what we're dealing with now.