The address bar at the bottom is useful. You must have a small phone or big hands. And these days small phones are super rare...
Is this a Chrome thing? I thought it was just a user-hating web design thing.
A lot of news sites seem to have a topbar that becomes invisible when you scroll down and reappears when you scroll up. I can't stand this. I want to scroll a particular line of text to the top of the text pane. I don't care where the top of the text pane is. I don't care whether the topbar is visible or invisible. But adjusting the topbar's visibility in response to scrolling makes it actually impossible to scroll the text to where I want it to be.
Also, my experience with buttons on the bottom with larger phones is that frequently you end up trying to extend your thumb and hitting a button with your palm, so YMMV anyway.