I remember the old days of "extended memory" which meant you needed slightly different configuration files for each game. That meant if you wanted to play a bunch of games, it made sense to learn how to write a bat script to config according to what you wanted to play.
You also had a terminal which gave a "computery" vibe, like you were doing something serious, because why else would the interface be so austere? Command lines are like magic incantations, and some people are just drawn to learning how they work.
Nowadays that entry route is gone, there's not much peeking below the OS desktop anymore on something like a phone or tablet. On desktop it seems like Steam just abstracts away everything else that you'd care about, though I'm not a heavy gamer anymore.