It appears to be a style of his site. There isn't a single capital letter to be found. It's intentional rather than lazy, although it doesn't make it any less grammatically incorrect.
Intentional or not it makes people look upon his content as immature. You're not trying to win the opinions of like minded individuals, you're trying to sway opponents and to do that you have to work on their terms (formal, coherent writing)
I'd say he was probably going for more uniqueness factor. Lack of care of capitalization, shows just that - lack of care and possible desire to break the norms.
You would be right if his goal was to impress someone but I doubt that was intention of his blog.
