Rarely discussed is ones initial fitting to later adjusting as one increases mileage.

Body, muscle strength changes and comfort tolerance.

Early riding season could be as example setting a higher and or use a shorter stem. As you clock up the miles, progressively lower the stem or lengthen. You may not be a racer but become more efficient and faster rider.

I have a bad back but as my riding season progresses, the back strengthens and prefer riding more stretched out.