Why does XVE look so basic?

I've literally been inundated by a message about my XVE project, specifically calling out why I have the temerity to describe it as an "Engine when it looks do basic?" My over simplification in reply being that an engine can be anything you please, the engine is simply the framework within which the content can execute. This applies to Unreal, Unity, Godot all of them, if you have something which…