Except for the part you ignore day one patches are entirely down to the game being unready for launch when the devs or publishers sent it gold to not fuck up their marketing campaign and end up costing the project more (by delaying, then needing to spend more on marketing for the new launch date).
Can you children actually learn what's the meanings behind terms please? People of my era despise "day one" patches,as it just shows the makers had more desire to make money, than make a good gaming experience.