They obviously know what they're doing. Objectively saying: it works, billions of active users, billions of $$$. But is it ethically correct? Do people feel good after using them?
The infinite scrolling short-videos used excessively by TikTok, Instagram & Youtube could be compared to a casino offering a gambler a slot-machine for his next high.
Yes, it works!
But nah, most people don't feel good afterwards xD
Yes true. Thats why I don't have TikTok or Instagram on my phone