You don't become addicted because of luxury. Attention is not a luxury. It's our time. It's our most precious resource and when it's "wasted" it's often because something is going terribly wrong.
Hmm, I think there's more nuance here, how about cars? Many people let themselves be much more dependent on them than they need to be, and in many cases adjusting their life around the car or the assumption that you'll always have this behemoth thing with an engine parked outside at all times sucking money out of your bank account, making your muscles and maybe social skills atrophy, exposing you to the risk of death all the time. You get comfortable with the experience of not having to do anything more than press a button, much like content addiction and smartphones, vaping, etc..
Removing the car creates a sense of pain, you have to move your body, possibly interact
The definition of a luxury is “Something that is not essential but provides pleasure and comfort.”
I’d actually argue that you can only get addicted to luxuries. You wouldn’t say you’re addicted to food, water, or shelter because you need to have them every day.