It's widely used, but only by the western world. Look at the map at the bottom of the article. Essentially everybody else abandoned the idea.
It's an inconvenience at best. It causes massive programming problems, e.g. Louisiana's switch to DST was a nightmare for Microsoft. It also results in large productivity losses. Economically, it does not work anymore in the way that it maybe used to. It causes more harm than good.
DST makes no sense nearer the equator where there is less variation in daylight hours throughout the year. There goes much of Asia, Africa and Central America. It is popular with people in wealthy democracies which enjoy around an 8 hour working day and have a culture that values outside recreational time and people have a say in such things. That pretty much explains most of the map. Many of the places that don't have DST are between the tropics, poor or have no functional democracy. The rest are more concerned with getting a few more holes of golf in after work than the welfare of Microsoft's staff.
> Since it isn't impacting most people beyond a mere rare inconvenience
Most people.
The reason no one is pushing to change it is that it's hard to lead a big effort with lackluster support. Very few people feel any impact at all.
It's obviously a bigger pain than benefit (it's arguably almost zero benefit). But what politician wants to lose out on a cooler project to spend time fighting for something almost no one really cares about?
It's an inconvenience at best. It causes massive programming problems, e.g. Louisiana's switch to DST was a nightmare for Microsoft. It also results in large productivity losses. Economically, it does not work anymore in the way that it maybe used to. It causes more harm than good.