If you do a simple ctrl+f on the article for "MDMA", the second result directly addresses MDMA used for PTSD[0], and the big issues surrounding clinical trials for it. Based on the treatment of participants in MAPS trials, conducted under Health Canada, I would treat anything the FDA says about psychedelics with a large amount of skepticism too.

[0] https://stuartritchie.substack.com/p/psychedelics?s=r#:~:tex...