The report you mention doesn't state what kind/type/condition of olive-oil was used. Was it extra virgin? Was it unrefined? Was it unfiltered? Was it cold-pressed?
I only ask because olive-oil which is extra-virgin, unrefined, unfiltered and cold-pressed will be loaded with anti-oxidants, negating the whole message of the article/study which was to eat vegetables (i.e. anti-oxidants) with olive-oil.
So the moral of the story is don't get your Science from half-baked tentative hypotheses yet-to-be-published in a peer reviewed scientific journal but instead served up as hash-browns in a newspaper.
Or put another way, make sure your olive oil is extra-virgin, unrefined, unfiltered, cold-pressed and preferably organic.
I quote from p255 of Udo Erasmus (Fats that heal, Fats that kill):
"The minor components in virgin (unrefined) olive oil have major health benefits. They constitute only about 2% of the total, and most of them are removed when virgin olive oil is degummed, refined, bleached, and deoderized."
He then goes on to list these minor components which include: Beta carotene (Vit A), tocopherols (Vit E), Chlorophyll, phytosterols etc. all of which are removed in the refining process.
On cooking he says (p254):
"When these protective unsaturated fatty acids are heated above 150C not only do they lose their protective effects, but they become mutation causing themselves. Virgin olive oils are the only mass market oils that have not been heated above 150C"
So if you are saying that cooking with Olive oil isn't necessarily a good idea, then I would agree, as would Udo Erasmus, one of the world's foremost authority on oils.
Perhaps I might suggest that you read "Fats that heal, Fats that kill" from cover to cover (I did) and also "Eat fat, look thin" and "The healing miracles of coconut oil" both of which are by Bruce Fife. Anyone who is following a low-fat diet must by definition be ignorant of nutrition and the vital role fats play in our health and wellbeing (both mental and physical).
It is a good idea to at least be familiar with the basics of an area of research before attempting to interpret first hand scientific studies.