Insnt the problem that nobody have ever developed an complex system using modern programming languages where "engineers feels like they have control over the c

Insnt the problem that nobody have ever developed an complex system using modern programming languages where "engineers feels like they have control over the code and are not afraid of doing changes." And that trying to have it as a goal only results in the project getting fragmented in a messy ball of micro-components(services/classes/libraries) with complex inter dependencies that nobody feels like they have control over the code and are not afraid of doing changes to? It's almost as if there is no real solution to complexity that avoids having to deal directly with the complexity inherent to a problem domain, and that means developing documentation and testing that allows people to touch/change scary systems.