You can add famous dispensationalist Bible ‘scholar’ C.I. Scofield to the list of religious renegades and ne-er do wells. In a long line of American religious entrepreneurs, Scofield had a reputation as a fraud and shyster. You can read it here.
But look how successful the Jehovah’s Witnesses have been, (not to mention the Mormons). The American Evangelicals who promote wacky dispensationalist Biblical interpretation are in the same boat with the rest of them I reckon.
No wonder Europeans look askance at the religious life of America and conclude that the lot of us are dangerous lunatics.