NewsNation correspondent Geraldo Rivera blasted Seinfeld creator Larry David and his comedy show Curb Your Enthusiasm after the finale following a 12-season run, sparking a heated response from fans and none other than podcast host Keith Olbermann. “I’m not a fan, because Larry truly is the self-righteous, snobby, self-loathing, narcissistic ass he portrays,” Rivera posted on X, formerly Twitter, while revealing the reason behind his disapproval of the “sour, pseudo bio-series,” RadarOnline.com has learned. “That opinion is informed by an outdoor afternoon Martha’s Vineyard birthday party at t…