A question not related to the content in this article: Does GDScript offer better dev experience over using existing scripting languages like Lua? Does the benefit worth the maintenance cost?
Yes. GDscript is fully integrated into the IDE, and once you learn “the Godot way” of scene management, development becomes fluid. Conversely, breaking out into another language to interface with Godot (my own personal experience stems from C# + Godot) while technically feasible, does not hold the same developer experience, and feels kludgy in comparison.