Instagram has it too. It's smart on the side of the social network. Rather than linking to your linktree you can run the store on your page directly (for a cut)

Instagram has it too. It's smart on the side of the social network. Rather than linking to your linktree you can run the store on your page directly (for a cut). Because sellers want the additional reach they're willing to typically create a second/third shop in your ecosystem rather than just having Shopify/Etsy.