Is This a Good Argument Against Christianity?

"I grew up reading mythologies and I was like a voracious fiction reader of the kid," he says. "And so when I encountered Luke's letter, which is devoid of embellished language ... He quickly just kind of passes by the fantastic happenings that he reports" C.S. Lewis said about it: "I've been reading poems, romances, vision literature, legends, myths, all my life."