Graphical "low-code" programming has been around for a long time in e.g. the control systems community, where people typically have strong math am physics backgrounds (e.g., knowledge of vehicle dynamics), but little experience with programming or software engineering.

Matlab Simulink and LabVIEW are well-known products that offer a low code approach to these fields. Large and complex projects are done with these tools.

IMO the complexity is shifted from interacting with the hardware to wrestling with the tools, e.g. version control, knowing what happens exactly and cooperation is really hard.