Sure. When you're buying advertising as an advertiser, you're setting the demographic or cohort that you want your content to be identified by. You're targeting that audience. When something's happening naturally in the algorithm, the algorithm is deciding who that cohort is based on likes, wants and the other same personalities they've built. For maximum sharing and watching, these platforms want revenue. They want people on the platforms for the most time possible, so they want to give you the most engaging content.
On May 30th, 2022. See this statement in context.