It's kinda weird to be tooting your horn over somebody else's prospective opinion, not some confirmatory facts.
The gist of the article is that Ball contracts limit guarateed salaries compared to other teams' contracts (Rodgers being a noted), relying instead on signing bonuses as the enticement.
Well, there are no free lunches. Other concessions are made. Let's consider Z. Smiths contract.
$16.5 mil/year. Sure, he's a good player with positional versatility entering his prime. But there does appear to be a concession in total value.
In addition to the $20 mil guaranteed signing bonus, the $9 mil roster bonus on the 5th. year of the 2020 league year is a concession. There isn't any plausible scenario where he would not earn that bonus. Even if you were of a mind to replace him for the paltry $2.5 mil in cap savings you'd have to do it before the 5th. day of the league year, early in the free agency period and long before the draft. Then in 2021 a decision must be made with that $5 mil signing bonus also due on the 5th. day of the league year. Cut him after it comes due and the cap savings is a only $5.75 mil. Taking a retrospective example, Graham's bacon might have been saved this year by his $5 mil roster bonus under a similar structure albeit a smaller contract.
These league year signing bonuses have become a common Ball concession. They function as a deterrent to cutting a guy after FA is in full swing or after the draft where replacements would be found. If you cut him before the signing bonus is due you're operating largely blind.
And it is not like signing bonuses are some kind of free lunch. Building a defense (it doesn't even qualify as a "rebuild" since it has not been good for quite a while) through free agency without a pile of cap space to start with necessitates signing bonuses to defer the cap hit. That deferral hits the cap soon and hard in 2020:
https://overthecap.com/salary-cap/green-bay-packers/
Further, those monster guaranteed salaries are going to franchise QBs and guys who put up All Pro years on their rookie contracts and command those guarantees as they enter their primes. We have not had those guys.
The structure of the contracts is less important than deciding which players to sign and then whether they play up to or over those contracts. So far as I can tell, Ball has nothing to do with that, nor the approach to go heavy in FA in an attempt to "win now". Ball's job is to make the cap pieces fit.