I think 80% of Blockland players have the ability to run shaders on minimum, no matter how low their FPS is.
Minimum is just crap, I would rather play Off. Low looks like crap as well, and Medium drops my FPS to around 20 which I can't tolerate just for "pretty shadows", And so now I am stuck with an even crappier version of shadows than before because Off completely removes player shadows when before the Shaders update the Blockhead was able to give off a nice smooth shadow. Not to mention shadows completely break transparency.
You took my context the wrong way, I doubt anyone would choose pretty shadows with 10 fps over good performance.
With your logic you are saying that instead of having minimum-max we should just have max, and than means that everyone can run it happily, when in the real world people want good performance, which is the main reason for having different graphic settings. And if off gives you a more reasonable FPS, then people are going to choose off.