I’m the opposite of this picture. It’s like I have to relearn the game each time and fluid play takes a long time to return.
Funnily enough my muscle memory persists to some degree though. So for instance if a particularly tough enemy is charging me I might push a specific key without actually knowing what it does. Afterwards I have to reason and rediscover what I was trying to accomplish and bind that action to the key I pressed.
Law terminology specifically can seem pretty archaic because there’s a high need for terms to be stable over time. In other fields and everyday speech terms can change over time. There’s contracts signed decades or even centuries ago that are still binding today. So it’s practical in a sense if the words within and those used to discuss legal dealings don’t change over time.