So far there are zero data points on the success side of the fence when it comes to visual programming. The exceedingly rare times I come across it professionally it's a toy project or something that's basically in the state of "We wish it was just code but we don't dare touch it".
In the era of vibe coders, visual programming seems like an interesting way to build consensus with an LLM when making a decision. LLM shows you a visual for its execution and the vibe coders feel like its approachable enough to tinker with the visual to improve execution.