Because I want people to be interested, but that requires knowing what a thing is.
From FAQ:
Is Luanti a clone of Minecraft? # No. Luanti has very different goals from Minecraft, and doesn’t aim to compete with or replace Minecraft. Luanti is an engine and a platform for many different voxel games, rather than one cohesive gaming experience.
When Luanti was initially created in 2010 it intended to replicate what Minecraft Alpha had been shown to do at the time, but it has later diverged into becoming more akin to a game engine.