This is just going in a circle. If they don't care about it then it makes no difference. A few characters in an address bar that they pay no attention to is not significant noise. Meanwhile the people that do care have less information.
They don't need to care about checking whether it's there or not or seeing it at all. But in a general sense, users do care about reduced clutter and aesthetics, and this is a way of improving aesthetics and creating a more consistent URL bar. It's a tiny bit more consistency and a tiny bit less clutter, but it's not nothing.
The users who truly care can just click the URL bar. (Someone said you also have to press the left arrow, which if true seems like a bad decision. I would agree the full URL should always be visible whenever the cursor focus is in the URL bar.)
