The article says he's worked with MH groups in the UK. As a celebrity ambassador for mental health and development, it's not exactly a bad call. He has spoken publicly about issues he faced losing his mother at an early age.

Ultimately, there's more billions in VC money chasing startups than there is available for treating say, diarrhea or dengue. Harry's just getting his piece of the pie, whether he 'deserves' it or not is immaterial.