Of course, as your skills go up, the chance that you'll get credit for them increases. Truly world class skills would market themselves. The point, however, is that there _is_ an independence between your skills and employers perception of them. It's not always going to be obvious to an employer that you can provide them with value.
It's not enough to simply have skills. It's necessary to demonstrate them, to get them out there. The techniques the presenter outlines might be familiar to someone who has done some reading on the general subject, but to the sort of entitled mindset that the presentation seems to be directed at, they mightn't be so obvious. Blogging, building a portfolio, networking: basic stuff to some, but not to everyone.