I don't think you need to worry about it. I think what this blog was talking about is more people who do spam content way down the page under the footer kind of thing.
I think if you build a good website which has content below the fold I wouldn't be worried at all. I have clients who rank for some very hard keywords and for conversion we have less above the fold so it's pushing them to do one of our call to actions.
Always remember google wants you to build a website which users like not a website that google likes.