Why is Instagram so worried about my mental health?

The description provided states that even if I disable online interest-based ads, I'll still receive targeted ads based on my activity on Facebook, and, I assume, the Facebook Companies (Instagram, WhatsApp, Oculus, CrowTangle, etc.). Meaning, if I interact more with pages and groups related to, let's say ...

from: https://www.google.com/url?rct=j&sa=t&url=https://theoutline.com/post/3376/why-is-instagram-so-worried-about-my-mental-health&ct=ga&cd=CAIyGmIzMzRiYTExMGZiMDVhNDI6Y29tOmVuOlVT&usg=AFQjCNHAEIGZnSzXQCfLHAsAfhHdPqVD4g