Even authors who try to be positive about it, end their stories with negativity. The headlines are against Nokia ATM.
They're still in free fall, and even if the Lumia 900 was the best phone on the planet(and it's not) it can't stop that. Combine that with the fact that the video in this post was from January 9, 2012, almost 5 months ago. The 900 is getting stale, and it never really peaked.
Right now, I think Nokia could release a phone with Windows 8 RT and it wouldn't matter past a 15 minutes of fame.