According to CoinWorld news, Bitcoin is not 'suitable' for long-term investors. Moreover, digital assets are more about speculation rather than investment. They are an 'immature asset class', with a short history, and 'lack intrinsic economic value', which could cause 'serious damage' to investment portfolios. Executives at Vanguard Group Inc. have adhered to the logic of the esteemed Jack Bogle and have clearly expressed their views on cryptocurrencies. However, due to the cold logic of index investing, this giant managing $10 trillion in assets has now become the biggest supporter of Strategy, a software company known for rebranding itself as an agent of Bitcoin and representing the industry's ambitions.