I just got the new rclone version v1.74.0. It got a new gui command (rclone gui) that runs a web based gui. Its awesome. You can interact with all kinds of storage in it and edit all of your local configs. Since it is web based, you can also use the gui on a remote server and simply tunnel the port via ssh to your local machine.
The web ui was first added in 2019. Sounds like it was just slightly reworked and bundled into the main Rclone binary in a way that’s easier to use now.