[tyh]

I would say there are people in all of these categories with egos. Quality work should speak for itself really.

Maybe we get the impression that people who work with web facing technologies are the loudest because they will have very popular repos on GitHub. Remember though, there are plenty of people who have solved equally complex problems who cannot share their work for various reasons.

Those people probably have a right to say they are a rock star, but not a lot of people will ever know outside their job / company.