"vaughn" wrote

Not so. The training and testing for the Commercial certificate is
normally done in single engine aircraft; often very simple single engine
aircraft. To take a step down from that, I hold a Commercial glider
pilot certificate and have taken hundreds of paying passengers up in
sailplanes.

Best to ignore this wingnut, as the knowledge of aviation is only slightly
above MX. 'Nuff said.
--
Jim in NC