I agree, it is an oversimplification - but I've literally been told that, verbatim, by several MH professionals, including the quack who misdiagnosed me as bipolar and sent me to the psych ward - "now, don't feel bad, it's a disease, like diabetes, a medical condition, nothing to feel bad about, nothing to be ashamed of"

and

"oh, by the way, I'm gonna lock you up because you have a medical condition that's nothing to feel bad about or be ashamed of"

OK, she ACTUALLY said the first part. The second part was just implicit, but that's pretty much the gist of it.