Maybe? I think the paths between such things are more maze-like and full of grues than a simple sliding scale. Though arguably even if it is "just" a sliding scale, the fact that there are more options on the scale between Modders and Custom C++ engine devs is still an interesting change over time. I remember when there was almost nothing but a impassable wall between Modders and Custom C++ engine devs.

Agree. It's a combination of faster hardware and more friendly software (unity etc). That's progress! Although some would not agree (see Steam and the fuss over the state of the store).