Fair enough. Most people don’t encounter analog clocks anymore. And many of us have smart watches or phones where we check the time. Since I have a non-analog watch, I don’t find I ever look at analog clocks anymore. If it’s in a room, I just don’t notice it. Growing up, it was important to know, but now I just never have a use for it. Learning is important, but there are so many more interesting and useful things to learn.
You could also make an argument about automatic or manual cars. Sure, we could teach our kids how to drive manual, but why? Most cars are automatic. If they want to have a manual car, they can learn. Otherwise it’s just a useless skill.