Implementing a game engine can be an educational experience, so if the author wants to learn by doing that's just fine. Besides that it's a good thing there are more options in the open-source game engine space.

Superficially Echo looks a lot like Godot, and is ahead in de graphics department (Godot does not support Vulkan yet). Also it uses Lua for scripting instead of its own language. Regarding documentation and community Godot is miles ahead, the Echo documentation is quite sparse.