I am also a const nazi, and occasionally find myself trying to imitate some of its uses elegantly through run time errors or strict naming conventions in other languages. I do understand why many other languages decided not to support it though. There's definitely a few times I've coded myself into a corner and ended up with "const spaghetti", having to do a const_cast or two to free myself and make a deadline.
The article makes it sound a little like you can just slap const everywhere and your code will be better. It does take more time and effort to be const correct, although it's usually worth it.