I'm no fan of Meghan, but I looked at the People article and the Archewell release, and I see nothing inappropriate about either, although the press release is bad and very amateurish.
The People article focused on Meghan, and that makes sense, because celebrity is what she can add to a partnership like this. She made a visit to the Girls Inc chapter in Santa Barbara, which created some photo-worthy moments to illustrate the announcement of the partnership. People -- and the #HalfTheStory news release -- both referenced it. That's fine. If Oprah or Melina Gates wants similar coverage, I'm sure People will be happy to oblige.
Archewell's press release fails to tell the provide a single morsel of information related to the lead sentence, "In celebration of International Day of the Girl, The Archewell Foundation, Pivotal Ventures, and the Oprah Winfrey Charitable Foundation announced their contributions to support a partnership between Girls Inc. and #HalfTheStory, aimed at providing digital wellness programming for young girls in underserved communities across America." Nowhere does it mention what Archewell's contribution actually is. (Was Meghan's fly-past the only contribution?)
It also serves up such a big "word salad" that it barely makes sense. What are "more balanced relationships with technology?" What is a "strength-based program?" How is Archewell "committed to uplifting girls?" What does Archewell's decision to "continue to listen to young people" actually do for anyone (and what does it actually mean)? How are they providing "the tools they need to thrive?"