The counter argument to this, more money to keep CeeDee later, Cooks has the speed to warrant safety help, and loosen up the zone on the defense, (Dak's weakness)
Also, Dallas was able to keep LVE, whose presence on the field was dramatic in terms of limiting the opponents offense.
Furthermore, with these need positions being minimized going into the draft, the Cowboys can legitimately rely on best player, and feel less of an urge to fill positions. (Guard and RB are definite needs, still) That impact is possible, because Dallas doesn't need a WR quite so desperately as before.