[chriszf]

It seems to me that you're talking about modularization for managing complexity, which FP does just fine. OOP doesn't have a monopoly on that. It takes discipline, but you can write well-structured code in any paradigm.

To say that functional is the same as procedural programming is a complete misunderstanding of both. To say OO tried to solve the pitfalls of the other two paradigms is a misunderstanding of OO on the entire spectrum, from Alan Kay's original vision to modern implementations.

Even forgiving those confusions for a moment, if it takes discipline to prevent your OO code from degrading to procedural code, how is it any better from just enforcing discipline on procedural code? If OO is quantifiably better, the default state of the code should be obviously better than with other techniques.