I think we did better work before all these methodologies. We also did more of it and had fewer bugs.
Prior to methodologies we had single occupancy offices with doors, we had one meeting per week that often let out early, management’s highest priority was protecting us from interruptions.
I don’t differentiate between agile and scrum or TDD, they always go together and anyone old enough to remember unbroken concentration is miserable attending three meetings per day.
I won’t do methodologies, I work better alone.