The concern raised is about the real problem of selective video editing that can mislead viewers by taking clips out of context. The issue highlighted is that while some watch the full speeches of Biden to form an accurate understanding, others only view short, out-of-context clips which can alter perceptions. The speaker points out that even sped-up views of Biden's speeches can lead to more severe conclusions than the actual content. It is emphasized that the concern is genuine, not fabricated, and that the full context of videos is crucial to get a fair portrayal. The mention of White House press corps expressing concern about Biden's portrayal indicates a consistent worry among those closely observing his public appearances.