So then how does saying "I got up at 9:00" have any meaning if you live in an area with only a few hours of sunlight if any?
I didn't make the claim that "two hours after sunrise" is completely accurate. I made the claim that it's more accurate. It's more accurate for more people who live relatively closer to the equator.
Depends just as much or more on the time of year - sunrise/sunset varies a lot by season. I think it makes less sense to base things relative to sunrise when it's so incredibly varied.