Apologies if my post sounded a bit unfriendly,
@MinIreland (I'm really foggy today). I meant that BPS theorists deliberately use slippery language to make it harder to deny their claims, I didn't mean it to sound as if I was accusing you of doing that.
The biopsychosocial model is a theory that has never been evidenced. Theories and models are a key part of thinking and debate, but people can't claim they have a scientific basis without producing evidence. The PACE trial showed that treatment approaches based on the model don't work for ME/CFS.
If you're a bit puzzled by negative attitudes to it, imagine someone had been testing their model for more than four decades but still hadn't produced any evidence to demonstrate that it worked (or even any sound reasoning to argue why it might). It wouldn't be surprising if everyone got a bit cynical about it.
If they experimented on sick people with it despite the lack of evidence, then refused to accept any responsibility for making them more ill
while still claiming it would have worked if only they'd tried hard enough, the response would be more than cynical.