The banner says “This project is not being actively maintained. It does still receive some updates from time to time but nothing frequent.”
It’s fine for a project to reach “maturity” and quit getting updated much, but the Wofi docs, interface and features still seem like they could use some polish.
It’s open source, so anyone else is always welcome to use the current state as a base to build on if they prefer to.
Aside from Wofi’s support for Pango/HTML/CSS, I don’t see a reason to use it over Fuzzel, though.