Ok, but any situation where you start your day with light in the mornings in winter in the North will necessarily mean that you end your day with darkness in the evenings. Whether we call the time the day starts "7AM" or "8AM" doesn't change this.

The fundamental trade-off is: sunlight when you wake up and you're going to school/work, or sunlight when you're coming back from school/work? Unless you reduce the school/work day, this is unavoidable.

I don't disagree with you at all, I think you missed my point. We should decide when we want people to be in light and dark, and not shift numbers on a clock to match that.

Sure, but it's functionally impossible to make this choice without changing the clocks. Too many events are coordinated - shop opening times have to account for other business start times that have to account for school start times.

Changing the clock is, realistically, the only way to coordinate all the necessary actors.

Otherwise, if schools decided to start at 9AM, they would put a huge burden on parents starting work at 9AM, who no longer have time to drop their kids off and still make it to their workplace.

How is changing the clock the only way to coordinate? Plenty of businesses have different hours at different times of the year. Also other countries do completely fine without DST.

It's functional and deliberate. Many people have to work and commuting, getting the kids ready, getting yourself ready means you need to be up early so you can get to work by 9AM. Sunlight in the morning is far more useful for the functioning world.