The definition relies on the mutual understanding of all parties. If you all agree that showing up in your underwear. hung over and smelling like a urinal is acceptable, then as long as you deliver, you have met your obligation.

Punctuality, on agreed conventions, is a sign of respect and a measure of professionalism.

Some would say, improperly editing a post or a comment is a sign of carelessness and therefore would indicate a tendency toward sloppiness in one's work. It all depends on the agreed upon conventions.

All else being equal, and it rarely is, if someone was late-as understood by societal norms- and someone else was on time, who would give you the warmer fuzzy?

Punctuality is a sign of professionalism.