Am I misunderstanding something or does this look like the worst possible incarnation of a monolith? Everything seems to be sharing everything, so whenever you modify anything, everything is impacted. Which in turn, means that a developer who wants to make any changes, has to understand the whole system in order to not break things or make a mess - which of course leads the cautious developer to write new, duplicate code for the piece of shared functionality that they want, defeating the whole purpose.

Happy to be corrected, I hope I'm wrong.