What are the cons of Vanguard?

Could you elaborate on some of the potential drawbacks or limitations of investing with Vanguard? Are there any fees associated with their services that investors should be aware of? How do their fund offerings compare to other providers in terms of variety and performance? Additionally, what are some of the risks involved in investing through Vanguard, and how do they manage these risks for their clients? Finally, are there any recent scandals or controversies surrounding Vanguard that investors should be mindful of?