Vendors have been selling various iterations of the "non-technical people can draw diagrams on the screen and then run it" idea for decades.

There are 2 main problems with this idea: 1) it is still code, so you have to think like a coder 2) any non-trivial routine fills pages of "diagram" and is arguably harder to follow than the 20 lines of code that would have sufficed.

An example of (1): At a pretty big early 00's e-commerce site, we decided to let a couple managers implement some "promotions" (conditional discounts) using the commerce suite's drag-n-drop feature. Add an inkjet printer to your cart, get free photo paper. Great. But they forgot to add the reversal logic, so crafty customers quickly figured out how to get reams of free paper! Oops.