alt Hacker NewsWhat you just described is a data structure that gets used. If the user brings the behavior what is the ecs? It's the data structure.
Of course it will be used somehow. I don't call a std::vector a "vector system" because someone uses it, but I guess people think using this data structure makes it a "system".
It's a data structure, except it doesn't describe how data is actually stored, only how its elements interact, so it's a data structure that doesn't actually structure data. If you are the kind of person that considers stuff like MVVM and Clean Architecture to be data structures, then I suppose it would be consistent. Most people don't.