[jondubois]

>> Changing your whole app's structure just so that you collect things to log in a central place (as you propose), would be the real violation of concerns.

Maybe it depends on what kind of language/platform you use but if each component is able to dispatch events on itself instead of logging, then that does not require changing the whole app's structure.

The only concern of the top level application logic would be monitoring/reporting so logging fits naturally under that label.