Not sure where you are getting that. They save nothing by cutting Carr, then would have to restructure the entire team even to attempt to be cap compliant.
This has nothing about being pro or anti Carr. His out is 2026 and they will restructure him. It is what it is.
From what I’ve read or heard on the radio that cutting him before the new league begins costs the saints some cap in 2025 but saves them a lot of money in the years after.