Brendan Iribe, who co-founded Facebook’s VR unit Oculus in 2012, announced he is leaving the company. While Iribe’s Facebook post (read it below) doesn’t refer specifically to any of the recent turbulence hitting the parent company, his exit follows that of the founders of Facebook-owned Instagram. While still a colossus, Facebook has been beset by a range of stiff challenges of late, including pressure from government officials in the U.S.