Amazing tutorial, and really exciting for RISC-V. I hope he creates a patreon or some other donation platform, as it must take some time to write this up. I'm sure some people would be willing to send a bit his way.
One suggestion: Your patreon page only mentions the Aarch64 project, not the Rust on RISC-V project. That might alienate people coming from the Rust blog; they might think they landed in the wrong spot (I sure did)