The Packers look to the future enough so that they don't have to get into the situation where they push more cap into future years.
All Dallas does is make the contract different so the cap hit is greater in a future season, just putting off the problem for another year. Eventually, it will catch up and they will be in a cap mess for a few years. TT is smart enough to not put the team in that situation.
You're absolutely right and I'm not suggesting at all that they will have to restructure in the sense that Dallas does. They may have to do some minor shuffling of the big deals though to be able to sign a guy or 2. There's nothing wrong with that and maybe they won't have to.