Depends on your criteria. If you are interested in the best solo developer it's probably true. But in software engineering the hardest part is working in team

Depends on your criteria. If you are interested in the best solo developer it's probably true. But in software engineering the hardest part is working in teams. Building a large scale system too large to fit in anyone's head while still maintaining a reasonable degree of modularity and cohesion is very difficult and requires a degree of verbal and written communication that could translate very well to blogging. More relevant is the low barrier to entry to blogging and Sturgeon's Law.