Knew a guy who married someone who was like this. Months prior he was so proud and happy with his switch. I could see a light go out in him and it was so sad.

I could see a light go out in him

Why didn’t you turn him on?🤔

It’s all about moderation, I’d never tolerate being with someone who judges me for doing X activity in a healthy way, but I also wouldn’t tolerate someone that’s no-lifing 24/7 and letting it affect their health, work, etc.
When every activity has to have at least one round of games in between for that dopamine hit, and waking up at night for it, coming home at work for it, yeah we have a problem. And in that case, boundaries (which can come across as ultimatums) are entirely appropriate.
i mean i’d start with saying you’re worried about them and unhappy, and asking them to just tone it down and maybe get some professional help to reach a more sustainable place