Well said. Everything in basketball is a skill. Rebounding in traffic is a skill, not just a matter of athleticism. Finishing in traffic is a skill, not just a matter of jumping high. If there weren't skill involved, every player over six-seven with a decent vertical would dunk on every play.
It involves body control, angles, timing one's jump, split-second adjustments while in the air, hand strength, concentration, the ability to power through contact, and a half dozen other factors that some players develop and quite a few don't.
Not sure why folks are nit-picking over that comment, but I'm really glad to hear Ewing is exhibiting that ability.