No, it's that you and others pushing these so-called studies don't know what you're looking at and are prone to accepting as fact things that simply aren't.
First, what you posted wasn't a clinical study. It was a meta-analysis of other studies, some of which claimed to be proper clinical studies and others that were merely pre-prints that had not been peer reviewed.
Second, this article does a good job of articulating the problems with it:
The study’s withdrawal from a preprint platform deals a blow to the anti-parasite drug’s chances as a COVID treatment, researchers say.
www.nature.com
TL;DR version: It's exactly as I said - lack of evidence, lack of repeatability, conflicting results, lack of properly administered clinical trials.
A lot of people are highly motivated to find a cheap, known silver bullet for COVID but so far, it hasn't been found to exist. Stop acting like it has and big bad government and Big Pharma are just hiding it from you.