Actually if you poke around at it a little more closely you'll find there's also a version of Llamafile that just ships llama.cpp, enabling you to supply a model of your choosing.
Also the point of a tool like this to make the ecosystem more accessible to everyone, not just software developers.
I mean, that depends somewhat on your use case. My primary development machine -- a Framework with a recent board and 32GB of RAM -- is perfectly capable of running smaller models on CPU, and while it's certainly easy to find where the ceiling is (and this obviously isn't the hardware profile of an average user), it's still more than sufficient for basic use
Also the point of a tool like this to make the ecosystem more accessible to everyone, not just software developers.