The issue (as the link illustrates, but I didn’t go into detail) comes with long distance communication. Time zones serve as a rough approximation for ‘where is the sun’ at a specific place that you want to communicate/trade with and that is a rough approximation for 'when are people/places likely to be awake/open. Without that you Would need to find published hours for people/places and that can be tough.
Replacing time zones isn’t impossible of course, but it’s definitely not as simple as ‘just use UTC+0’. That shifts the inconvenience elsewhere
The issue (as the link illustrates, but I didn’t go into detail) comes with long distance communication. Time zones serve as a rough approximation for ‘where is the sun’ at a specific place that you want to communicate/trade with and that is a rough approximation for 'when are people/places likely to be awake/open. Without that you Would need to find published hours for people/places and that can be tough.
Replacing time zones isn’t impossible of course, but it’s definitely not as simple as ‘just use UTC+0’. That shifts the inconvenience elsewhere