Pretty much all people I ever heard about or new who has issue with gaming were addicted to something like lol, wow or pubg.
The people who play whole night and that are irritable and underperforming during day, who made gaming their whole life, are not playing causual games. They are playing console and pc games.
Those folks are paying their time into the game sure - but casual games in IAPs can drain bank accounts surprisingly fast from folks that'd normally consider themselves above microtransactions. There is a lot of very sneaky psychological tricks that go into trying to get folks to spend an insane amount of money - I'd compare that to something like CS:GO which is trying to get everyone to spend a little bit of money but is less oriented to harness big spenders outside of the marketplace which isn't all that promoted in game.