Maybe it boils down to how well you are able to navigate a code base.

With a full-featured language specific IDE, it is very easy to navigate through even complicated spaghetti. It makes debugging call traces simple, with a GUI.

However, many other file viewers and editors make this much more complicated, and it can be frustrating to follow code that is making heavy use of modularization.

If you are grepping your way through a deeply modular code base it can quickly become difficult to keep track of anything.