They didn't fund the health study, they funded this paper to point out the positive data in the study.

There's two way to bias independent research through funding. The most nefarious is to fund a whole bunch of research, and only publish the favored results. By ignoring enough failed attempts, it's even possible to get false-positive successes, through random chance. (Relevant XKCD: https://xkcd.com/882/)

The second way is to only fund research that is likely to be favorable. E.g. if you sell vitamin supplements, you only fund research on people with bad diets, but not people who eat healthy diets that likely aren't affected by supplements.

In this case, it's leaning so far into the latter, that it's just pointing out positive research that someone else found.