from the article -

"Two reviewers independently selected studies with high-concentration THC defined as greater than 5 mg or greater than 10% THC per serving or labeled as “high-potency concentrate,” “shatter,” or “dab.”"

Two reviewers who apparently knew very little about THC dosages.

"Ninety-nine studies (221 097 participants) were included...; more than 95% had moderate or high risk of bias."

Or cared about evidence quality.

Who funded this?

"Primary Funding Source: Colorado General Assembly, House Bill 21-1317."

Ah. The People of Colorado. I wonder if they know?

It's Reefer Madness!