AUSTIN, Texas — Whole Foods CEO John Mackey has openly criticized Obamacare since 2009, likening the health care plan to “socialism” and most recently “facism.” But after meeting with a few of his college-educated Team Members—the official title for entry-level employees at the organic grocery behemoth—Mr. Mackey modified his description to “more like Marxist despotism with a Trotskyist bent and heavy undertones…