The word “addiction” is overused in my opinion. Bad habits are not addictions. An addiction is something which actively harms you, but you can’t stop doing it. Yes, you can argue social media is harmful, but it generally does not cause people to lose their jobs or spend all their money.
I'm addicted to caffeine. It's relatively harmless, might even help me work better. No one ever lost their job or spent all their money on caffeine. But it's unquestionably an addiction.
Though even there I think they are moving to phrases like "drug use disorder" partly because of usage mismatches like this.