Those are actually French toilets. They were designed like this so you can check for blood and other abnormalities. British toilets were designed so the poop would fall in the water, reducing the stench. The British design proved more popular, yet the French design is better with less splashing and for checking. It's important to check, to find out if there's something wrong with your intestines like cancer (black blood) or a tapeworm. The British didn't find this important, just like washing hands after pooping.