The article doesn't really make it clear how much of an effect this has

> People younger than 60 who drank one to four cups of coffee, particularly filtered coffee, had lower rates of artery disease and death

> The study is observational and doesn't prove that filtered coffee is healthier than unfiltered coffee

> a cup of unfiltered coffee contains 30 times more diterpenes than a cup of filtered coffee

This sentence in particular is kinda meaningless without specifying the specific amounts and what they mean. For instance, saying "an unfiltered cup of coffee contains 30 times more salt than a filtered cup" would not mean much if one contains 1 ug and the other 30ug, but would be very significant if it was e.g. 1 vs 30g