From the article:
“A lot of people derive their meaning from their employment. So if there’s no need for your labour, what’s your meaning? Do you feel useless? That’s a much harder problem to deal with.”
This supposes that the only way a person can feel useful is if they are working for someone else in return for money. I can assure you that it is perfectly possible to feel extremely useful by doing work that benefits yourself, your family and your friends. Try it, and you'll find that watching the kids playing on the swings etc. that you spent 10 hours making on your own is far more satisfying than watching a box of widgets that you helped 20 other people make for your employer getting loaded onto the delivery lorry. The happy smiles that the kids reward you with are worth far more than the £15 an hour your employer rewards you with.