There has to be a line somewhere though, right? Like if the turn signals were hidden on the main touchscreen, under options->settings->turn signals left/right,

There has to be a line somewhere though, right? Like if the turn signals were hidden on the main touchscreen, under options->settings->turn signals left/right, we would conclude that this is an absolutely idiotic design that shouldn't be allowed on the road, not just say "weird, maybe they should just teach that if it's so hard"? The problem here is that you might have to use the turn signal mid-turn, and if the buttons are on the wheel it can be really confusing if not downright I possible to operate them when turning. Tesla isn't the first to do this - some Lambos/Ferraris also do this, good luck finding a single owner who doesn't hate it.