I'm not going to defend women on this, but as someone who worked as a therapist for some time its not an accurate reflection of reality exactly.

Psychology was founded on and built for women. Nearly everything we understand and know about it is designed around helping women. To the point where its a huge controversy right now that a couple of researchers determined that using normal therapy techniques actually increases maladaptive behaviors and possible suicide when used on men, because its designed around how women act. That's why we have a surge of "man therapy" doctors cropping up (which is great, recommend them to anyone). If you aren't getting helped, and your doctor seems like a quack you won't take their labelling seriously.

Partly from this and partly out of good old male stubbornness when admitting problems they also just don't go. You can't get diagnosed with anything if you never go to a doctor at all.

Basically the lowness of men on this chart is just as big a problem as the highness of women.

As an addendum to an already long comment, women are disproportionately high because they are lazy and over emotional. They play up their negative symptoms considerably, which leads to easy diagnosis of anxiety/depression/BPD. And rather than sit there in therapy and just work through the issue like a muscle knot, they'd rather a lifelong commitment to a happy pill.