Well, they need to a vibe code a drag-and-drop Nocode UI first if they want to compete with Simulink.

https://www.mathworks.com/products/simulink.html

(There's also Julia and Modelica)

https://discourse.julialang.org/t/simulink-alternative-in-ju...

https://modelica.org/

Pathsim is a block diagram-based simulator written in Python and seems to be getting very regular commits https://github.com/pathsim/pathsim