BPD is diagnosed in women between 75-80 percent of the time. An outsized percentage of these women identify as gender nonconforming and/or bisexual, which is used as more evidence of BPD.
“Men are diagnosed as well” (at extremely low rates) is…not the argument you seem to think.
And yeah. The DSM lists autism as a mental illness. It lists gender dysphoria as a mental illness. It lists PMS as a mental illness. You bet I think an awful lot of people practicing psychiatry are full of shit.