I think there's a significant distinction here to be made between "configuration" and "programming".

Do I copy/paste swaths of code that I don't understand and put them in my programs? No, absolutely not, because each line is one I can reason about and want to understand.

But do I copy/paste swaths of configuration files / init scripts / etc, without understanding the implications of every single configuration? Yes, absolutely, because the depth behind each of those options is often irrelevant to me. (until I discover otherwise late at night when an alarm goes off (!!))

I think it is important to distinguish these. I don't think any dev that's done ops work would claim they aren't guilty of the latter, but at the same time I think very few good devs ever, and I mean ever, do the first.