However he shows the same kind of bias that he is speaking out again by not discussing the best known branch of such research. And that is MDMA for PTSD.
It is best known simply because it is, in fact, demonstrating that it works. The FDA has been repeatedly calling it a "breakthrough therapy" since 2017. It is in multiple phase 3 trials around the world that are going well, and full approval is expected this year. Research papers on it, like https://www.nature.com/articles/s41591-021-01336-3, are appearing in the top science journal in the world and are no less enthusiastic than a press release. Let me quote, "These data indicate that, compared with manualized therapy with inactive placebo, MDMA-assisted therapy is highly efficacious in individuals with severe PTSD, and treatment is safe and well-tolerated, even in those with comorbidities. We conclude that MDMA-assisted therapy represents a potential breakthrough treatment that merits expedited clinical evaluation."
So no matter how much questionable research there may be - and I'm sure it is a lot - let's not throw out the baby with the bathwater. There is also good research, and these drugs have the potential to make a huge difference.