I don’t think “shortsightedness” is the difference. The sheer amount of privileges TikTok requires on your device speaks to Cambridge analytica levels of personal profile knowledge.
Couple that with the endless scroll, hot people doing thirst traps, flashy idiocy, flashing icons hugging the full screen image, no discernible window with controls tempting you to back out or log off…it’s the “perfect” tech product. One that’s endlessly addictive. That’s what makes tech good. They know you better than you know yourself, and they will shamelessly serve you exactly what you didn’t realize you wanted to see.