Each part of the codebase is a separate self contained module with its own wrapping (boilerplate), except there's like 30 of them and you still have to understand everything as a whole to understand the behaviour of the system anyway.
Think of what ravioli are and apply that to the same code analogy as spagetti or lassagna. The code is split in tiny units and that creates too much indirection, a different indirection than spagetti or ravioli. The architecture feels fragmented even though there's nothing wrong with each piece.