Eric Pinnell wrote:

Incorrect. The Sport Plane category still requires a driver's
license, but not a pilot's license.

I think you're confusing license with medical certificate. The Sport Plane
pilot will still need some type of pilot certificate, but will not need a
medical certificate if he has a driver's license.

George Patterson
A man who carries a cat by the tail learns something that cannot
be learned any other way. Samuel Clemens