I know many here subscribe to Mike's newsletter (and many more are grateful users of his Open Social Security site). Hopefully this new post by him will inspire a few more folks to follow him. He's invariably concise and wise in his advice, and this time he takes on a topic that comes up frequently on these forums with typical clarity:
https://obliviousinvestor.com/professional-financial-advice-how-much-should-investors-pay/
https://obliviousinvestor.com/professional-financial-advice-how-much-should-investors-pay/