The most useful fact here cuts in an interesting direction: X's own Community Notes system fact-checks Musk's own posts. When he made claims about Ukrainian elections and about astronauts being "stranded" for political reasons, Community Notes attached corrections to them — a system he champions overruling him in public. That demonstrates a fact-checking mechanism that doesn't exempt the owner. In fairness, the fact that his posts sometimes need correcting is itself part of the critics' case, and after being corrected Musk complained the system was "gamed," raising concerns he might weaken it. The honest framing: Musk posts prolifically and sometimes gets things wrong like any heavy poster, but he also built and platformed the very tool that publicly corrects him — including correcting himself.