I do sometimes wonder if my Pollyanna tendencies come to the fore in this kind of debate. The older I get, the more I accept that all of us are carrying some kind of "stuff", coping with all kinds of loss, sadness, even anxiety, depression and other ills but somehow, presenting an ok face to the world. As daphned said earlier, H (and W and K) had to fly round the world as part of their work in the Royal Family and they got on with it. I'm sure many of us have somehow got on with caring or work responsibilities when in truth, we wanted to curl up in a ball and avoid them all.
Just because Harry was born into wealth and privilege, doesn't exclude him from any of that. Of course, he could buy Therapy. He doesn't come from a family that takes to Therapy easily, it seems to me. He grew up in the shadow of an acrimonious divorce that the whole world knew about, as it knew about allegations his father, isn't in fact his father. He lost his mother at an age that research confirms is especially lethal on the later depression front. Give him and everyone else struggling with m.h./addiction etc difficulties a break. We're all human. It could be one of use tomorrow, or one of our loved ones. I think that's the point he and K and W are trying to make.