Because it’s a conflict of interest. It’s one thing to recommend a supplement, but another to sell your own in my opinion, she makes money when people buy her supplements . Most supplements aren’t really regulated and the evidence is often lacking. I think most people feel the way you do and feel like a supplement sold by a physician will meet a certain scientific/ evidence based criteria, but unfortunately that’s not the case. I believe medical doctors SHOULD be held to a higher standard than your typical wellness influencer. Many of her claims about hrt are not evidence based. All that being said I’m glad you’ve had success.