Vanguard Group has begun allowing clients to trade spot Bitcoin ETFs, despite a senior manager's critical view of Bitcoin. John Ameriks, speaking at the Bloomberg ETFs in Depth conference, described Bitcoin as a "speculative collector's item," likening it to a digital Labubu due to its lack of income generation and cash flow. Despite this skepticism, Vanguard has made select spot Bitcoin ETFs available on its platform, highlighting the importance of assessing their performance. The firm maintains a neutral stance on client investment choices and acknowledges blockchain's potential to enhance market structure.