Mosseri says he used to think of those platforms as more “lean-back experiences,” but that’s changed in recent years. TikTok is now “every bit as participatory as we are at this point” and as YouTube has leaned into Shorts, it’s “brought them closer to us.” Mosseri notes that TikTok now has a friends tab, which a TikTok executive testified earlier in trial only accounts for about 1 percent of the videos viewed on the app.