First off, the article is about the UK, which always has been much farther down the path of wussification than the US, the upper classes anyway. And the declining sales at their home improvement stores might be as much due to their economy as loss of skills.
So I think that while you could find plenty of examples of men who have never been taught the typical "manly man" skills here in the US, it's been that way for 100 years or more. That's where we got expressions like "tenderfoots" and "dudes" and "greenhorns" in years gone by. Today, we have "metrosexual" men, just a little too civilized and citified for their own good. But there are still plenty of men who know how to build things, fix things, etc., even if they don't make their living that way. Women, too. Does your kid know how to swing a hammer, turn a wrench, any of that? Yes? Then the future is not nearly so bleak as the writer makes it out to be.