When I first watched the video, I found it equal parts fantastical, inconceivable and entirely believable. It’s a lot to process. However, in light of all the revelations from the DOJ trial and the leak, nothing Krum discusses in the video seems like too wild of speculation. I’ll be curious to see whether Google responds.
Additional reading. Krum also referenced research by Malte Ubl, a former Googler, who said that “Google uses an up-to-date version of Chrome for rendering” and whose research found that “100% of HTML pages resulted in full-page renders, including pages with complex JS interactions.”
The presentation. Watch the video and decide for yourself (I suggest starting around 6:37): Phase II of Google’s Mobile-First Indexing is just Chrome.