I came to a very similar conclusion after I had been teaching programming in high school for a few years: the difficulty of "programming" is in learning to think algorithmically, and no amount of "No Code" tooling gets you around that problem. The article alludes to this with the "PBJ sandwich problem" - people are used to specifying processes based on a collective (and often unconscious) cultural understanding, which computers obviously do not share!
I think most "No Code" and especially RPA in general will fall into that. The required mindset to think programmatically is not something the majority of people have unfortunately. But "No Code" will enable those that is somewhat technically inclined and able to think sufficiently programmatically.