The evidence provided strongly and consistently supports the statement. Several relevant sources with moderate to high authority (Citywire, ThinkAdvisor, Crypto Briefing) corroborate the two key components of the claim: 1) that Commissioner Caroline Crenshaw is departing the SEC, and 2) that she is the 'lone' or 'only' Democratic commissioner on the panel. The most direct source, Citywire, explicitly states that her departure leaves 'three Republicans sitting on the commission.' This directly confirms the user's statement. Other sources support this by identifying Crenshaw as the sole Democrat, logically leading to the conclusion that her absence would leave a panel without any Democrats. There are no contradictions among the relevant sources. The irrelevant sources, such as those from the Federal Register and FINRA, do not pertain to the commission's composition and therefore do not weaken the conclusion. The cumulative weight of the consistent reporting makes the statement highly probable.