Am I wrong in thinking that this is a Tk Text widget (or possibly several), with a selection of functions atop? Plugins for the most part are just key press cal

Am I wrong in thinking that this is a Tk Text widget (or possibly several), with a selection of functions atop? Plugins for the most part are just key press callbacks which manipulate this Text widget and associated state? I know every project must start somewhere but this doesn't seem to have considerable substance for a purported next gen vi(m), and given its heavy reliance on pre-made tools (like text areas), without much abstraction, it seems like it would be hard to get over the hump to make it competitive with existing editors.