Ugh. Another blanket statement that in no way reflects the actual paper in question.
From your own source he recommends larger studies, cross-team work clear pre-trial hypotheses, and study-registration.
Guess what?
This n=5,300 study was performed by researchers at UCSF, Stanford, Berkeley, and Michigan, they published their intention to run the study prior to running it with a hypothesis that was partially proved wrong (they expected shortened telomeres with noncarbonated SSBs as well as with sugary soda).
What exactly is your issue with this study? Or do you just reject science in general.