The post highlights early concerns about Luna (now LUNC and USTC) being a "complex ponzi" as early as 2021, suggesting that its collapse was foreseeable to some. This serves as a cautionary tale about due diligence in crypto, particularly for projects with unsustainable mechanics like Terra/Luna and its associated stablecoin UST. Investors should be wary of projects that "don't make sense" and consider the warnings of experienced analysts.