One of the worst eras? You obviously ignore what was there the years preceding Parcells. You may also have forgotten the last years of Landry and earliest years of Johnson. I take it you do not recall the expansion years, quite understandably.
Parcells turned this franchise into a contender again in a very short time. Unquestionably the best HC in franchise history since Jimmy. Maybe, just maybe, ever. Too difficult to argue the case in different generations. Quincy was not a Parcells guy. Vinny and Drew showed Romo how to be a QB in this league. They were legitimate QBs, a little statuesque and imobile, but definitely QBs.