No kidding about the funding. I once asked a PI what they thought about the relation of both Schizophrenia and Autism to maternal immune activation models, like

No kidding about the funding. I once asked a PI what they thought about the relation of both Schizophrenia and Autism to maternal immune activation models, like is there any way to distinguish what we are actually modeling. Their only answer was "depends who you are trying to get funding from". I don't think that fully explains it though, even psychiatric diseases with less funding buzz word power suffer from a similar fate. Diagnosis is a hard problem, especially when all you can really go on is patient self report and a few hours of observed behavior. Although I do think that psychiatry as a field could be approaching the issue better too, a lot of people seem to get stuck in their old ways.