They do sound like a grumpy old man.

As a recovered TikTok addict, I can supply that it was the jokes for me. There was a lot of content that got delivered to me that hit my sense of humor just right. I’m sure you could track increased oxytocin in active users just like with narcotics.

Maybe the fact that I can't grasp why you'd watch your tiktok feed explains why I'd really enjoy my own.