Based on the information provided, it seems like there is no clear mention of fiduciary duty or breach of fiduciary duty involving Blaine Dietrich in the email you shared. Instead, it appears to be a promotional email for an AI-powered streaming platform called Sonic AI.
To search for information on fiduciary duty and potential legal issues involving Blaine Dietrich, I will need more specific details or context. If you can provide additional information or clarification on the matter, I can conduct a more targeted search to find relevant information.