I agree with that as someone with a mechanical engineering degree. I've never been a professional software developer but I've mostly self-taught myself over time and even ran a small software business as a sideline at one point.

I've never had a particular desire to go into development full-time. (I was out of working as an engineer by then anyway.) But, had I wanted to, I have very little doubt I could have slid into a dev job fairly easily with my background if I spent some time focusing on the area I wanted to work in.