And it plays, in large part, why some engineers get upset when programmers call themselves engineers without the skill, discipline, and responsibility to back it up.

To me it has nothing to do with size or complexity. You can have a 20-line well-thought-out imperative Python script that is well-engineered. And you can have a 200,000 line Java app that leaks PII all over the place, loses user data twice a week, and is impossible to debug because it's a giant spaghetti rats nest.