In a world where there isn't work schedule and in general the whole of society's schedule which works around the arbitrary time, I agree with you.
Sure. But this argument is surely less powerful than it was back in the era of church bells and big clocks on factory walls and so on. We now have electronics that add a whole new layer of abstraction to our schedules, to the point that you can now miss a DST change if you're not paying attention. For many people (I'm one) this change is now just a useless irritation.
So adjust the work schedule.
If people want more time in the evening, get up earlier and go to work and go home earlier.
You can even shift school/work schedules throughout the year.
Changing the time (zone) IS changing the work schedule. That is essentially what a time change IS. In the most expedient way possible.
The work schedule is adjusting all the time, and it moves in the opposite direction.