This is biased reading at its worst. I was simply stating what the authors concluded based on their analysis of 10-20 studies (not just one). This is what they say in the abstract: "The results show that exercise does not reduce all-cause mortality and incident CVD in older adults or in people with chronic conditions, based on RCTs comprising ∼50,000 participants."

One study with 500 people doesn't prove a point.

Of the top of my head I know at least one other study where mid-life lifestyle intervention didn't reduce mortality (it slightly increased it in a statistically non-significant manner). 21 yrs follow up. ~3000 people. https://www.ahajournals.org/doi/10.1161/CIRCULATIONAHA.121.0...