If there’s a genuine interest I’m happy to explain. Reels and shorts are severely different, even from a purely technical and feature-focused standpoint. They lack lack the ability to pause (I think YouTube allows it but reels no) or save to device, and (reels) lacks the wide music catalog that TikTok has. Neither product has a comprehensive video editing platform like TikTok does. Both lack the ability to push timely content and maintain freshness. Reels is fundamentally based on the social graph for recommendations, with some additional signals for things like hashtags. TikTok learns from content itself and recommends based on content. TikTok has a good mix of discovery content as well (I think it’s approximately 10% discovery? Meaning, pushing you things it has no signal on to see if you like it or not, rather than only showing you things you like). Sharing and interacting are incredibly smooth and easy. The ability to stitch videos and do face to face replies, or easily do a video reply to a comment, encourage more face to face two-way conversation.

Aside from the technical features and algorithmic superiority, the community on TikTok is completely different. Have you seen the comment sections on the apps you mention? TikTok has created a beautiful community, and it’s a community that cannot be reached on the other two apps, regardless of their feature set.