Dallas does some of the same accounting moves....but has done a worse job of not swinging and missing on contracts like Zeke's and Gallup's and many others.
Dallas can make as much space as they want to if they really wanted to make a run at it...but they haven't. We can all speculate as to why. Right now we should be in a sell mode and be looking to develop a young team for a couple years and then make the free agent moves needed to get us to the top.
Instead we will keep doing the same....overpaying and poorly structuring deals, keeping players way after their effectiveness diminishes, and generally not doing what is needed to build a winner. There are teams that have figured it out. The Rams look to have done a good rebuild after going all in a few years back. The Eagles dropped back for a year here and there and then make another run. Baltimore keeps contending, taking a step back, and then doing it again.