What if they are unhappy and working would make them unhappier?

“What have they done with their lives up until this point?”

Sounds like they’ve lived a nice if somewhat sheltered life close to their family playing games. Maybe at some point they might get bored of that or want more money and venture out into the world but that’s not up to you or OP to decide/judge, it’s their life.

“Im not judging”, proceeds to judge.

These days 25 isn’t that old to be living at home given extortionate rent and lack of decent job prospects. So if they had a soul-crushing job they would be “healthy” in your eyes?

Why are you so optimistic/pushy about them becoming wage slaves?