The smoking gun here is that they actually hired psychologists and experts in creating addictive stuff from e.g. the gambling industry. It clearly shows that their intent was "make this as addictive as possible."

Then they ignored tons and tons of warning signs that this was having a negative effect especially on children and the elderly.

Now I think they need to hit YouTube, TikTok, and addiction-engineered loot box games. If we're establishing the precedent that addiction-engineering is bad, that's a huge win for our civilization.

Pretty much the entire mobile ecosystem is a hellscape of black hat attacks on the human central nervous system. You can do it via a web browser or a desktop too but when you do it on a phone the portability and something about the form factor and touch interface seems to supercharge it.