I get the sentiment. Personally, I could say the same thing about control theory, systems theory, economics, operations research, and statistics. And I could al

I get the sentiment. Personally, I could say the same thing about control theory, systems theory, economics, operations research, and statistics. And I could also share dozens of anecdotes of bugs and suboptimal software that was produced as a result of this lack of experience. But at some point, you have to acknowledge that developers can't know everything. Go deep or go broad, but accept that both paths have their limitations and benefits. Maybe in some cases you'll run into a bug you created due to your lack of sysadmin experience, but don't feel bad about it...your experience has led you to other types of expertise. Fix it, learn from it, and move on.