Todd Spangler NY Digital EditorFacebook chief Mark Zuckerberg insisted that issues like misinformation and political polarization are not “primarily about social media” — and he complained about a raft of critical articles published in recent days based on internal documents leaked by ex-employees.Meanwhile, also on the social giant’s third-quarter earnings call, Zuckerberg said Facebook is investing about $10 billion in its “metaverse” strategy in 2021, including in its Oculus VR products,