Comment by chacham15

I think the difficulty here is addressing: who is your target audience? Depending on that answer, you have different existing relatively succesful visual programming languages. For example, game designers have managed to make good use of Unreals' blueprints to great effect. Hobbists use Comfy UIs node language to wire up generative AI components to great effect. As far as generic computing goes, Scratch has managed to teach a lot of programming principles to people looking to learn. The problem comes in when you try and target a generic systems programmer: the target is too abstract to be able to create an effective visual language. In this article, they try and solve this issue by choosing specific subproblems which a visual representation is helpful: codebase visualization, computer network topology, memory layouts, etc...but none of them are programming languages