Always thought it was funny how villains just stand there waiting while someone yells an entire paragraph to fire a laser

The actual reason is pretty simple. back in older black-and-white manga, fast punches or sword cuts just looked like random ink scribbles on the page. writers had to put big text names over the art so people could tell what was going on.
Anime studios just kept doing it because it sticks in your head and sells toys.
Did you already know this, or did you just think they were being extra dramatic?