The cap exists as an actual thing, though. An NFL team can't just "go over" it.
Being in cap hell means other valuable players have to be moved off the roster. It results in a less consistent model for roster building, and sudden talent purges.
I, for one, DO care about the roster and cap management of my favorite professional sports team. I find it interesting, and it is an inarguably essential facet of NFL team building.
Why are you railing against this? It's weird.