Let me analogize. This is a blog post that claims that racism isn't real. As proof, the author explains that none of the studies that show a reduction in racism when you remind people that Michael Jordan and Beyonce exist can be replicated. Well, okay, sure. And the guy who earned a doctorate with the thesis, "Does Playing Jackson 5 Make People Less Racist?" might want to turn this into, "Racism does not exist," as a way to distance himself from his own terrible scholarship. (Also, did you find his Marvel Cinematic Universe Easter Eggs?)
So, thus far, there is actually not enough evidence to throw the, "Racism exists," baby out with the, "Do these interventions affect racist belief?" bathwater. And since we're second-guessing biases, it's super weird that you're always in comment sections of (politically-charged) articles concerning fields you're not in.