I think they just don't consider any of this to be genuine meaningful research so it does not apply. They know it's a fake disease so nothing they do actually needs to go through the normal process of medical research. In the end they believe they'll be proven right and that going around the normal process is a net positive.
This is pretty clear given everything about psychosocial "research" operates using the very, very loose rules and methodologies of clinical psychology while being given exactly as much weight as large, objective, double-blinded longitudinal studies involving tens of thousands of patients followed methodically. All the benefits, none of the accountability. They operate out of ideology, not science, and that gives them every exemption in practice since people don't care what happens to us.
Of course that's not how any of this works and this is also precisely how psychiatry has harmed untold millions, by exempting themselves from normal medicine and claiming patients to be theirs and working on them away from prying eyes. Given the history of medicine, there should be extra careful attention given to making sure it never happens again. Instead, authorities are complicit in egregious ethical lapses. No lesson learned when contempt and prejudice frame every conversation on a topic.