How Googlebot handles AJAX loaded content(youtube.com)

How Googlebot handles AJAX loaded content

https://www.youtube.com/watch?v=_6mtiwQ3nvw

1 comments

I knew that Google likely was processing JavaScript already, but according to this video just published they are pretty far along. I still think that AJAX rendered sites are not going to rank as highly as static sites (for now), but I wonder if an AJAX rendered page can be indexed now without the Fragment Specification.