It's easier to have lower lifestyle expectations when you get fulfilment from your work; much less inclined to show off with a nice car if you can tell people you're saving the world instead of selling lootboxes to children.

Tbh - I find these things hardly overlap. People who like fancy things tend to like fancy things regardless of the job they have. Their satisfaction with their job rarely influenced their purchasing decisions - it’s mostly influenced by their disposable income.