Your comment exposes how much metacognitive laziness you have in modern society that you didn't realize that people still do these things, just not you. They aren't obsolete tasks, just done at a layer you don't see.

I don't have to prime a well pump any more because my house and workplace are hooked into the municipal water system. I don't have to prime a pump because that task has gotten so abstract as to become turning a faucet handle. But engineers at the municipal water plant do have to know how to do this task.

Similarly, filling an oil lamp and lighting it is now abstracted for normal people as flipping a light switch (maybe changing a light bulb is a more appropriate comparison). But I actually have filled an oil lamp when I was a kid because we kept "decorative" hurricane lamps in my house that we used when the power went out. The exact task of filling an oil lamp is not common, but filling a generator with fuel is still needed to keep the lights on in an emergency, although it is usually handled by the maintenance staff of apartment buildings and large office buildings.