Yeah, the themeing is there. But you can easily uninstall it and other core CachyOS-packages, they’re just packages after all. (I’ve done it)
The other way would be to start with Arch and add CachyOS repositories, that way you can also profit from the v3/v4 packages.
Floppinux anyone?
Long time ago I had a 3.5" HD floppy disk Linux with graphical user interface and ethernet and some programs on it. But 64 bit and the increased kernel size probably make this difficult nowadays.