It seems unintuitive today because people living in cities and towns don’t usually see sunrises and sunsets from where they live. If you had a way to easily reference the sunrise and sunset points against known horizon, it’d be very easy to tell.

Also because today we have accurate clocks and most of us don't depend on seasons for anything. Farmers care about when to plant, and a few gardeners pay attention, but for most of us nothing changes in life. (I'm carefully not counting the traditional vacations that most of us have around this time - though that is important to us and historically related, we could move the date and it wouldn't affect anything else).