Functional Programming is harder than Object Oriented Programming
nickelcode.com
Article details why OOP languages have been so popular over the years while FP languages have remained relatively unpopular.
nickelcode.com
The argument being made is basically: "OOP is easy because it is easy".
I happen to find many aspects of OOP quite unintuitive for almost every class of problem I've ever tackled, beyond the classic academic examples (colors, animals, elevators, etc.). I'm almost always more focused on what my program is "doing" (functions) rather than what my program is "being" (objects).
So, because the author provided no evidence beyond his opinion, I'm going to effectively refute the premise with this devastating blow:
Object Oriented Programming is harder than Functional Programming.
There's your first problem. There's a great quote: "Q: Is Erlang Object-Oriented? A: No, of course not!" http://www.sics.se/~joe/bluetail/vol1/v1_oo.html
Your second problem, embodied in the superficial dismissal you made of the first comment on your post, is that you understand neither OO nor FP. You really need to read Cardelli and Wadler before bloviating further on this topic.
You third problem is that you're submitting your own blog post. Noone is a good judge of their own work -- If it was really worthy of consideration, someone else would submit it independently.