Simply putting the aircraft down in the touchdown zone and then applying a constant deceleration to make the same exit
I don't think anyone is suggesting that RYR use a different braking technique simply to make the
same exit that would have been available with a more gentle deceleration.
The OP said
It's noticeable that RA brake considerably harder than the other two airlines, to make the earlier exits and reduce taxiing time, and giving themselves an extra few minutes for the turnaround.
Depending on the airport layout, it's easy to envisage a scenario where, if you miss one exit you are faced with a lot of runway before the next available one, followed by a correspondingly longer taxi back to the gate. That's the trade-off that's being discussed.
It would be interesting to see how the economics stack up - I'd be willing to bet that some bean-counter has worked out that those extra few minutes (possibly enabling a late arrival to be turned round into an on-time departure) are worth however many cycles are lost from the brake TBO.
Without seeing the numbers, it's hard to argue with.