I live in a heavy rain area, the auto wipers don't adjust effectively to a change their rate to adjust to the amount of rain. So when a semi passes you on the highway and your windshield gets drenched, it stays that way until you hunt and peck you way to the manual setting on the screen, or you keep pressing the 'one wipe' button on the stock.
Not being able to see when you are beside large trucks in the dark is dangerous. Taking your eyes off the road to fix the situation is more dangerous.
You know pressing the button on the left stalk once not only initiate the wiper once, but it brings up the wiper screen. It's but 1 screen press for you to engage wipers. And it's on the side closest to you, takes as much time as glancing at your speed.
But for new version of auto wipers, Elon stated they're already testing it. So it's not like they aren't already working on improving the auto wipers.