I used to play world of warcraft only for pvp (player vs player combat).

In that game, you can spend basically a full 40 hour week to make a character a suitable level for PvP. Or if you want to be ready for a wide variety of PvP types, you will create 3-5 characters this way over months. You also get to do this whole process again every year when they raise the level cap.

Or you can use a macro keyboard and be ready to compete during the first week of the PvP season while also having a job and hobbies.

In minecraft, say you need to connect two very distant bases with a bridge. You can painstakingly place every block by hand, and risk falling to your death and having to start over, and likely get some mild carpal tunnel, or you can set up a keyboard macro and come back later to a 2,000 block-long bridge.

It is meaningful in the sense that it can turn something which is annoying to the point it is becoming a chore back into something which you can enjoy as a game.