Earlier quoted context omitted.
I think it's an important distinction - it's "easy to use" as in you can put things on the screen, play sound, etc without having to read documentation or deal with boilerplate logic/steps longer than the custom code needed. It's not "easy to use" as in Unity where you want to have some complex physics apply to some premade models with certain rendering effects so you learn where to go to get each of those things and…
I get what you're saying and I agree up to a point but I don't necessarily believe the distinction is necessary. LOVE2D is very "easy to use", easier than Raylib in my opinion, and probably has the most extension documentation I've seen for a game framework. https://love2d.org/wiki/Main_Page
projects like defold / godot a pretty neat but they are more opionionated: they have a hierarchal structure.