That's not in any way "the gist of the article", it's a comment made by a random person interviewed, and it's her opinion.
The main subject of the article is the extensive scientific study performed by scientists at the University of Melbourne, which showed that working more than 25 hours a week decreases IQ scores in people over 40.
So what is defined as good work? That reminds me of managers who say they only want the best. The best varies greatly from role to role and company to company.
“The most important thing about work is that it should be ‘good work’. If it is good, it does not matter whether full-or part-time.”