You still don't have a point, because the article wasn't trying to say we didn't do a good job of drafting in the late rounds or bringing in undrafted FA's before Parcells, it was only saying Parcells has done a good job since he's been here.
Once again this is overanalyzing and trying to dispute the article based on something the article didn't say or suggest.
Even so, one could only make the argument you mention if they went back and looked at the players from that team. That isn't something you can just assume.
We were an older team then so the chances are that we didn't have as many young undrafted FA's and late round draft picks making real contributions as we do now. But you can't assume that either.