We can call it job specialisation. I don't do project managing, I do coding. Not my business to coordinate everyone, my job is to write code.
In my experience the people who solely focus on the code end up being significantly less effective.
ah, see, so your job description includes, besides being a dev, also being a project manager. that's fine, there's nothing bad about it, it's just that your job requires a bit more from you than other places.