A site that existed for 10 years does not just lose its authority.
Just one Google update and this could change in a blink of a second.
I wish this never to happen though. I like the forum because of the awesome members present here.
I'm pretty sure Bitcointalk is compliant with every Google update, all website administrators link their accounts on Google Webmaster Central so they will have updates of any incoming updates so they can take all the necessary actions, the moderators are actively deleting spam and ban people who posted malware on the forum so the forum is clean from being reported as hosting a malware.
I believe Bitcointalk is still the authority when it comes to the Bitcoin community.