The research group at your link did not do any primary research or testing themselves, but simply studied a small sampling of others’ research.
They chose just four clinical trials, based upon some internal criteria which isn’t spelled out at the link.
I’m not saying they cherry picked their findings, but their review of the research in this area is far from comprehensive, and represents only a tiny sliver of the research that has been done over the last half century.
It was more reasearch than I saw posted by anyone else.
And anecdotal experience does not amount to research.
I suggest you find some research yourself. Not claims, but research. And by the way, that is all I sought to do, not offer any opinion.