Tesla requires the driver to pay attention to the road at all times, even with "FSD". (And having tried it, you would definitely want to do so.) This system does not have that requirement, on roads where it's supported. What's the lie?
They are misleading the public in thinking that Mercedes is a leader in autonomous driving, but they are not. They are, including all other legacy car companies, so far behind Tesla, that they should be ashamed.