I'd say there are two independent but interrelated issues here: artist/author/creator intent and reader preference and empowerment.
Both are important.
As a writer, it matters to me to keep my work and personal personas separate for both practical and philosophical reasons. I'm a strong supporter of people having multiple accounts to match how they wish to have separate personas on social media. That's empowering of creators.
As a reader, I want to be able to shape my experience here and control what content is presented, and that's separate from the personas of people I follow.
That's where hashtags come in. On Fediverse, that seems to be the best way for readers to have power to get the experience they want.
So: accounts for personas and hashtags. They empower content creators and consumers, respectively. And they help empower us all on this platform.