I've made some VNs (or VN-adjacent things) in Decker without writing even a single line of code. the issue with Decker (though it might also be one of its strengths) is the automatic dithering of images, 16bit color palette restriction (though palettes can be easily swapped out) and low quality sound. other than that, it's really simple to use when you know where to find every option in the menu (I use practically only fields and buttons)