That's a good video - short, but informative. Thanks for sharing it.
I don't see any contradiction here with the link I posted above.
PageRank may still be one of the more important metrics for Google to use, as Matt Cutts says, but he also says that there are other things which webmasters should be focussing on. Much as Susan Moskwa says here.
The problem with PageRank is that people were - and still are - obsessed with it, and concentrated on increasing PageRank whilst ignoring more important issues like content and user-experience. PageRank is based on the number and quality of incoming links, so SEO somehow became all about link-building - because for some reason, many people seemed to think number was more important than quality, which is simply not true.
By concentrating on producing high-quality content, you are building a site which other quality sites will choose to link to, and these links are far more valuable in Google's eyes than the thousands of low-quality/Spam links on directories, blogs, forums etc. which are promised by so-called SEO companies.
So yes, Google still uses PageRank, but only as one of over 200 metrics used to rank a site, and it wants webmasters to concentrate on the quality of the site as a whole, and not just a single, unimportant, aspect. Do you care how many incoming links SitePoint has? Or are you only interested in how good the content of the site is?