Habr login form

Today I had the honor of visiting my favorite Habrahabr with a PDA. And in order to log in using my login, I had to click on the “enter” link and gobble up some extra traffic. And the question immediately arises: why is this needed, why can’t you just put the login form on the main page, there seems to be plenty of space.
Thank you, I think many came up with a similar thought.