Well, that’s sort of what I’m saying…the A-10s primary weapon requires low altitude because of both the gun’s range and the need for a pilot‘s eyeball to guide it.
With the weapons and sensors on the F-35, low altitude may not be needed.
If you can achieve the same effect (target destroyed) from a different sensor/weapon combination, then the delivery altitude is irrelevant.
With FACs who can transmit mensurated coordinate data, the B1 equipped with JDAM is an awesome CAS machine.
Large payload, long loiter, high speed dash to new TIC situations. Lots of Weapons delivered. Threats eliminated. All good.
What makes CAS unique is the detailed integration of fires/effects in close proximity to friendlies, not the altitude at which the delivery is performed.
Just because the A-10 did it one way, doesn’t make other ways less effective if they’re able to achieve the same effect.