Do you know if this works for non-technical subjects? I used to write about design tools and some front-end coding, but that was years ago and I was never super

Do you know if this works for non-technical subjects? I used to write about design tools and some front-end coding, but that was years ago and I was never super passionate about it. Recently, I started writing about personal finance, which so far has been pretty fun, but I don't know if you can sign up to give talks at conferences unless you're Ramit Sethi or equivalently famous.