A patriot speaks out for the Plains, Georgia Wonderboy:To the editor:I am disturbed--not about the events abroad so much as about the media's attitude toward them and about their disposition to run President Carter down.We don't need a hard or hard-boiled president. We need one who can gain good will and dispel the image of the overbearing and hateful American. And President Carter is good at that. Notice how he inspired Sadat and Begin, and how he won over Lopez Portillo after a bad beginning? In the present troubled situation I like the way the president hasn't gone off half-cocked....