Used Muse for two weeks mostly to reply to messages. Biggest issue: it doesn't sound like me
After two weeks of using Muse mainly for message replies, the biggest complaint is voice: the same polite-assistant tone lands for both a boss and a best friend, and one friend immediately asked 'did you have AI write this lol'. Replies also skew too long and agreeable. The thread is a useful case study in personalizing an agent's writing register.