Although I applaud the goal (I browse away from twitter whenever the login popup appears) I think it's a bit funny that you need someone of geohot's calibre to remove a "feature" that most probably sits behind a single switch/condition somewhere.
I clicked that link and got three near fullscreen dialogs one after the other: sign up nag screen, turn on notifications nag screen and sign in with Google prompt. I just wanted to see geohot's post but apparently whoever's in charge of Twitter user interface just can't help themselves. If they break nitter, I'm not coming back.