That's true but how many blogs are even started with either generating lots of traffic, or lasting forever, as goals? The article implies that all or most do, b

That's true but how many blogs are even started with either generating lots of traffic, or lasting forever, as goals? The article implies that all or most do, but some percentage must be started just as experiments or hobbies, and I would hardly call those "failures", not in any useful sense of the word.